Solved 31. | A football player at practice pushes a 60 kg - Chegg -Combination of force and velocity determines power output acceleration due to, Q:There is a 67 kg rubber sled on a wet concrete floor. mass of ball , m =140 g = 0.14 kg What is the, A:Hey, since there are multiple questions posted, we will answer first question. Question: 31. EX: while standing or sitting on a swiveling chair (rotate your upper body in 1 direction -> chair + lower body rotate in the opposite direction) magnitude of each object's velocity is the same after impact as before, but direction changes Each pull with a 3 How much force does an 80 kg astronaut exert on Ch. 5 - Riders on the Power Tower are launched skyward Ch. How much force must be produced by the biceps brachii at a perpendicular distance of 3 cm from the axis of rotation at the elbow to support a weight of 200 N at a perpendicular distance of 25 cm from the elbow? (c) What does the scale read if the elevator moves upward at constant velocity? How much force must he apply to the sled? 5 - A crate pushed along the floor with velocity vi Ch. The work done by a force causes a change in energy of an object, KE = mv Fnet = net, Q:FRICTION What is the acceleration of. One is a 2000N forward push by, A:a) How much force must he apply? k is always longer than r (or the distance to the segmental CG). Ability of a body to return to its original state if its disturbed How much force must he apply to the sled? (a) What Is the acceleration of the crate? Answered: A football player at practice pushes a | bartleby A. For most people, a systolic pressure less than 90 mm Hg is considered low. A football player at practice pushes a 60 kg blocking sled across the Depends on qualifications and experience. DESTION 7 How much force must he apply to the sled? A marble is placed in a graduated cylinder, which was filled to the 20 mL mark. The coefficient of kinetic friction between the grass and the sled is 0.30. (b) Find the maximum acceleration the truck can have before the box slides. 588 N Start your trial now! a. the South., Q:In t-ball, young players use a bat to hit a stationary ball off a stand. 2 The coefficient of kinetic friction between the grass and the sled is 0.30. 18 N B. Force exerted on the object Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. Status. The road is slick,, A:(a)The resultant of two forces F1 andF2 is given by, 5 - A construction crew would like to support a 1000 Ch. mass of car M = 1000 kg, Q:While digging a small hole prior to planting a tree, a homeowner encounters rocks. first, Fa =, Q:Susan gently pushes the tip of her finger against the eraser on her pencil and One is a 1,950-N forward push by the, A:(a) A football player at practice pushes a 70 kg blocking sled across the field at a constant speed. If the force of friction including air resistance is 250 N and the acceleration of the car is 1.80 m/s2, what is the mass of the car plus its occupants? Your question is solved by a Subject Matter Expert. Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. The coefficient of kinetic friction between the grass and the sled is 0.30. -yes, because of the more weight, width doesn't matter A. 5 - A wood block, after being given a starting push, Ch. Candidates will also be on-call at times. (b) What is the tension in the rope if he accelerates upward at a rate of 1.50m/s2 ? An object is at rest an will remain at rest, Ability to resist a disruption of equilibrium Mass of the airplane, m = 9000 kg . (a) What is horizontal force P. 60 N C. 180 N D. 600 N Expert Solution Want to see the full answer? (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? The traffic light hangs from the cables as shown. The acceleration is, Q:What force is needed to accelerate a sled (mass=55kg) at 1.4 m/s2 on horizontal frictionless ice, A:Given Draw a free body, Q:April works at the grocery store. I = moment of inertia Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. For this situation, draw a free-body diagram and write the net force equation. SOLVED: 32. Two football players are pushing 60 kg blocking sled across 5 - The forces in Figure P5.11 are acting on a 2.0 kg Ch. Must have experience with both pets and livestock animals in a commercial setting and some experience with wildlife and exotic animals. (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration? A man exerts a horizontal force of 125 N on a crate with a mass of 30.0 kg. If the blood pressure in your brain is 120 mm when you are lying down, what would it be when you stand up? Determine the lift force exerted on the plane by, A:Given data: down with a speed of VA= 3 m/s. 5 - A 2.0-m-long, 500 grope pulls a 10 kg block of ice Ch. William Moebs, Samuel J. Ling, Jeff Sanny. Click 'Join' if it's correct. s = 0.65 m Laluate (a) Show that the minimum value of P that will move the crate is given by P=sFgsec1stan Figure P5.45 (b) Find the condition on in terms of s, for which motion of the crate is impossible for any value of P. What force does a trampoline have to apply to Jennifer, a 45.0-kg gymnast, to accelerate her straight up at 7.50m/s2 ? Mass m= 150 kg of an applied, A:Letthemassofblock=mVelocityofblock=ConstantAppliedforce=Fapp, Q:(I) Sketch the free-body diagram of a baseball (a) at the moment it is hit by the bat, and again (b), A:Part (a) with, Q:6. Which parts of this job do not specifically require the rescuing of animals, and why are these parts important? A Suppose you place a block of mass M on a plane inclined at an angle . *Response times may vary by subject and question complexity. a., Q:A 12.23 kg box made of rubber is on dry asphalt at rest. One is a 2000N forward push, Q:A boat moves through the water with two forces acting on it. 5 - A 22-cm-diameter bowling ball has a terminal speed Ch. 5 - The three ropes in Figure P5.2 are tied to a Ch. The distance, Q:6) A box of 4Kg sits on a table. What is the principle of conservation of angular momentum? Coefficient of kinetic friction k= 0.3 For equilibrium, the center of pressure must be directly below the body COM a. 18 N B. 5 - Running on a treadmill is slightly easier than Ch. The max mechanical advantages for the brachialis, biceps, and brachioradialis occur between angles at the elbow of approximately 75-90 degrees. 200 N 5 - In a head-on collision, a car stops in 0.10 s from Ch. Describe the moment arm during bicep curl? rotary force) (it has a magnitude and direction) 5 - Figure P5.49 shows the velocity graph of a 2.0 kg Ch. As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 s. Its mass is 0.145 kg. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations. (b) . 5 - A 1.0 kg wood block is pressed against a vertical Ch. View this solution and millions of others when you join today! 60 N C. 180 N D. 600 N a = 1.4 m/s2 If the vehicle is accelerating at, A:Write down the given values using suitable variables. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. Where would an osprey MOST likely live? *Response times may vary by subject and question complexity. International units for power are watts (W) 5 - A football player at practice pushes a 60 kg Ch. 5 - Three objects move through the air as shown in Ch. A small rock (m-3 kg) and a car (m-1000 kg) stay still on flat ground. 5 - An airplane moves through the air at a constant Ch. m.a= Fnet The surfaces of the blocks are rough. Angle of the incline = 36.87o, Q:Q4: Two boxes with masses m, and m; are placed on a frictionless horizontal surface and pulled 60 N C. 180 N D. 600 N 1 See answer Advertisement JemdetNasr Answer: C. 180 N Explanation: This job requires lifting up to 100 pounds and dealing with dangerous animals. What is friction and what types of friction are there? (a) When the truck accelerates forward, what force accelerates the box? 180 N b. YouTube to MP3 Co. phone cover for mo (c) The elevator then moves with a steady speed of 5 m/s. Show that the mass will slide down the plane if s tan , where s is the coefficient of static friction between the block and the plane. . (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? [units: kg m2] A football player pushes a 670 N blocking sled. A. 0.38 m What net Ch. TO No human can push on a bat with that much force. If he exerts a, Q:A baseball accelerates forward when it is hit by the bat as shown in the image below. W = work done on an object(in joules) -Since the diver cannot gain angular momentum in the air he must take off with sufficient angular momentum to complete the required number of rotations. If you want any, Q:A car has forces acting on it, as shown below. Q:C8. 5 - Two blocks are at rest on a frictionless incline, Ch. -potential: energy due to position We dont have your requested question, but here is a suggested video that might help. -The higher the position of the CG, the greater the potentially disruptive torque created if the body undergoes an angular displacement. What factors influence u (the coefficient of friction)? SOLVED: foothall player at prartice pushes 200 pound blocking sled Multiply F by the coefficient of kinetic friction between the player and the sled to get the force required to push the sled across the field. shot with a force, Q:When you learn to drive, you discover that you need to let up slightly on the break pedal as you, A:Static friction is a frictional force that resists the motion of an object trying to move from a, Q:Q6: Determine the magnitude of the friction Find a. A 500 N BALIKBAYAN BOX WAS UNLOADED BY A DELIVERY TRUCK IN A DRIVEWAY. A boy pushes the sled and it Find P for motion to, Q:5 Clear The coefficient of static friction between sled and grass is 0.73, and the coefficient of kinetic friction between sled and grass is 0.68. How much kinetic energy does a baseball thrown at 80 mi/hr (35.8 m/s) have? If the two players entangle and continue traveling together as a unit following the collision, what is their combined velocity? Candidates will respond to different assignments while upholding the best animal control services in the county. 5 - Researchers often use force plates to measure the Ch. Part A Calculate the force required to push the sled across the field. 60 N 18 N 600 N C. d. Show Answer Create an account. t = time taken to do the work Your question is solved by a Subject Matter Expert. Acceleration of drone = 5.0 m/s2 Its engines produce 1.250107 N of thrust, and air resistance is 4.50106 N. What is the rocket's acceleration? 60 N C. 180 N D. 600 N. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy, Educator app for The engines in a supertanker carrying crude oil produce a net force of 20,000,000 N on the ship. Acceleration of the boat 5 - The rolling resistance for steel on steel is quite Ch. 0.000065. . The object slow down with an acceleration of -5 m/s2. The rotary effect created by an applied force (i.e. *Response times may vary by subject and question complexity. The speed of the person sitting on the chair relative to the chair and relative to Earth. -Angular momentum remains constant in the air. C. If a 100 kg footbalil player only pushes horizontally GET IT MOVING TOWARDA, A:The opposing force experienced by an object when moving in contact with a surface is known as the, Q:Jack pulls a cart with a force of 30 N by a rope tied to a cart and making an angle of 25 with the, Q:2) Suppose that a sled is accelerating at a rate of 2 m/s?. 0.11 m Mass (m) = 1500 kg A 5.00105 -kg rocket is accelerating straight up. Here,F1 is the, Q:A 20 kg box rests on a table. m = mass A football player at practice pushes a 70 kg blocking sled across the field at a constant speed. She needs to move a heavy crate of bananas ( m = 80 kg) to the, Q:Mr. Vollmayer pulls his children (21kg and 24kg) on a sled (5kg). Note: Normally, your blood vessels constrict and expand to keep your brain blood pressure stable when you change your posture. Mass of the rocket (m) = 900 kg I = mr2 a) What force does the earth exert on the box? The mass of the vehicle isMv=2000kg A toboggan race begins with the two crew members pushing the toboggan to get it moving as quickly as possible before they climb in. The coefficient of static friction is s, and P is directed at angle below the horizontal. A: v = 7.78 m/s in the direction of the force application, product of a force and the time over which the force acts (b) What is the size of the force acting on it? A football player at practice pushes a 55 kg blocking sled across the field at a constant speed. First week only $4.99! (a) Construct free-body diagrams for each block. 60 N C. 180 N D. 600 N Get free access to expert answers Get 3 free question credits (a) What total force resists the motion of the car, boat, and trailer, if the car exerts a 1900-N force on the road and produces an acceleration of 0.550 m/s2? How much force must he apply to the sled? vo = 13.4 m/s (130 mi/h) How much force must he apply to the sled? 97% of Numerade students report better grades. Continuing education provided on the job. A spring is stretched by applying a force to it by hands. 5 - A horizontal rope is tied to a 50 kg box on Ch. W = work done Solved A football player at practice pushes a 80 kg blocking | Chegg.com The, Q:Notes -The horizontal location of the CG: The closer the horizontal location of the CG is to the boundary of the base of support, the smaller is the force required to push it outside the base of support, thereby disrupting equilibrium. A 100 kg block shown is acted upo by (b) Identify the horizontal force that causes the block of mass m to accelerate. and, A:F1=8N,30abovehorizontalF2=10N,45belowhorizontalf=-6N,alonghorizontalNetforce, Q:Problem 5: Two blocks are connected by a massless rope as shown below. C.600 N (b) What is the net force on the car? The mass of the boat plus trailer is 700 kg. 2. type of molecular interaction between the surfaces. (Uk ( (kinetic)) is always smaller than Us ( (static)) ) A football player pushes a 670 N blocking sled. Q:(1) A mug rests on an inclined surface, as shown. When the freight car begins to move, the string makes an angle of 35.0with the vertical. What lever class is most used in the human body? 5 - What is the drag force on a 1.6-m-wide, 1.4-m-high Ch. 60 N Distr C.180 N Lc D.600 N. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. 5 - A light block of mass m and a heavy block of mass Ch. Start your trial now! Two football players are pushing 60 kg blocking sled across the field at a constant speed of 2.0 m/s. If the Ch. (b) What is the tension in the string? A box rests on the back of a truck. The level rises to 40 mL. -there is a high coefficient of friction between football shoes and turf. 5 - Is it possible for an object to travel in air Ch. (a), A:When a body is at rest, the force that is required to just start the motion of the object from rest, Q:55. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. N3 EX: GRF. The coefficient of static, A:Given: A discus thrower exerts an average force of 1000 N against the discus while the discus moves through a displacement of 0.6 m in the direction of this force. Try it in the Numerade app? Acceleration (a) = -30 m/s2, Q:A car of mass 1600 kg begins to roll down a hill which is inclined at 15 degrees from the ground., Q:You push a box with a force of 200 N. It slides with a constant velocity across the floor. A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its acceleration? 5 - An astronaut takes his bathroom scale to the moon Ch. (a) What is the tension in the rope if he climbs at, Q:A 2.0-kg block is at rest on ramp which makes 20 with the horizontal. A 1000-kg car pushes a 2000-kg trck with a dead battery The wheels of the car push on the road, Q:Q5. D.900 N iPad. In most human movement, changes in momentum result from? 18 N B. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. -how quickly or slowly work is done What is a resultant joint torque in the body? 5 - The wood block in Figure Q5.22 is at rest on a Ch. Drawing Free-Body Diagrams With Examples; Author: The Physics Classroom; A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. the best answet. Using a rope, a man applies a force to the crate, as, Q:6 What does tucking do to moment of inertia in pole vault? 0.68 m C.1.0 m D. 6.6 m, Two football players are pushing 60 kg blocking sled across the field at a constant speed of 1.5 m/s_ The coefficient of kinetic friction between the grass and the sled is 0.30. the, A:acceleration of block is given by The ramp is tilted at 20 and is frictionless. No movement - Isometric muscle action (no mechanical work), -rate of doing work 18 N B. (d) If the elevator had no brakes and the cable supporting it were to break loose so that the elevator could fall freely, what would the spring scale read? The mass of the pig is 200 kg. Hayden and Amy are pushing/pulling a table (150 kg) up a flight of stairs. first class: lever positioned with the applied force and the resistance on opposite sides of the axis of rotation (ex: seesaw; scissors) 5 - A 4000 kg truck is parked on a 7.0 slope. When the elevator is accelerating downward at 3.8m/s2 , the scale reads 60 N. (a) What Is the mass of the backpack? We dont have your requested question, but here is a suggested video that might help. 5 - A wood block is sliding up a wood ramp. near a forest mass of the boat (m) = 1000 kg (b) What is the force in the hitch between the car and the trailer if 80% of the resisting forces are experienced by the boat and trailer? of 25 N. answer choices 18 N 60 N 180 N 600 N Question 9 60 seconds The force of the bat on the, Q:Alberto tries to move a 23.3 kg desk that is stopped on a horizontal surface, just as Alberto If you, A:Alberto tries to move a 23.3 kg desk that is stopped on a horizontal surface, just as Alberto If you, Q:Q2 As illustrated in Fig., consider two workers who are trying to move a block. Units = kg m2/s 18 N B. Limbs move in the direction of the applied force - Concentric muscle action (positive work) (b) What is the tension in the rope if he accelerates upward at a rate of 1.50m/s2 ? What are some examples of the law of inertia? (increases in impact velocity and temp increase COR). The figure shows the overhead views of four situations in which forces act on a, A:Q7. Perfectly plastic: objects deform and stick together approximate, A:Given Draw -Base of Support: This consists of the area enclosed by the outmost edges of the body in contact with the supporting surface of surfaces. 5 - Youve always wondered about the acceleration of Ch. What force is needed to, A:The force required to accelerate the sled is given by vehicle and accelerates at a rate, A:The mass of the trailer ismt=700kg What is the tension Ch. (PLS HELP ME NOW!!!!!) A. 11. A Mark for Review How much force must he apply to the sled?A. Conceptual question: The block below slides with constant velocity under the action How much force musthe apply to the sled? Impulse = Ft Its engines produce 1.250107 N of thrust, and air resistance is 4.50106 N. What is the rocket's acceleration? -offensive lineman will not move unless force is applied Force applied (F) = 4200 N, Q:2) Now, a third block is added between blocks A and B as shown below. 5 - The drag force is an important fact of life for Ch. F = 20 N 3. with the horizontal., Q:A boat moves through the water with two forces actingon it. A person stands on a scale inside an elevator at rest (Figure 2.54). Experts are tested by Chegg as specialists in their subject area. Two people pull on a rope in a tug-of-war. initial speed of ball , u = 0 m/s The static, A:Given A. The coefficient of kinetic friction between the grass and the sled is 0.30. Multiply F by the coefficient of kinetic friction between the player and the sled to get the force required to push the sled across the field. This is a full-time position that will require working occasional weekends, nights, and holidays. the collision. answer choices 1 Ns 6 Ns 33.3 Ns Question 2 900 seconds Q. -energy absorbed and lost through deformation of mass m. The, Q:atus: 5 - A 1000 kg car pushes a 2000 kg truck that has a Ch. -Angular velocity () increases when the MOI decreases and it decreases as the diver increases MOI. 5 - Josh starts his sled at the top of a 3.0-m-high Ch. K = 0.30, 2. A. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. Mass of the airplane, \[m=9000\text{ kg}\] the pencil does not, A:As per Newton's third law, there is always an equal and opposite force to every force. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. 5 - While standing in a low tunnel, you raise your Ch. Final Exam - Biomechanics Flashcards | Quizlet 5 - A 2.7 g Ping-Pong ball has a diameter of 4.0 cm. Ch. 5 - A 20 kg loudspeaker is suspended 2.0 m below the Ch. (b) What is the tension in the string? A. the point around which the mass and weight of a body are balanced in all directions OR The point about which the sum of torques produced by the weights of the body segments is equal to zero. final speed of ball ,, Q:3. a. A 50 kg box hangs from a rope. Ospreys are birds that eat fish. (I)1 = (I)2, When angular momentum is conserved, there is a tradeoff between MOI and angular velocity..discuss this, Fully tucked position: low MOI, high angular velocity Coefficient of kinetic, Q:A rope is used to pull a 2.89-kg bucket of water out of a deep well. A1,100 kg car comes uniformly to a stop. Forces of 7.6N at 38 degrees and 11.8N at 143 degrees act at a point.Calculate the magnitude and direction of their resultant. 5 - A ball is thrown straight up. (b) What does the scale read if the elevator moves upward while speeding up at a rate 3.8m/s2 ? A football player at practice The coefficient of kinetic friction between the grass and constant speed. You can specify conditions of storing and accessing cookies in your browser, A football player at practice pushes a 80 kg blocking sled across the field at a constant speed. A football player at practice pushes 65 kg blocking sled across the field at a constant speed. P = Fd/t H1 = H2 18 N B. 5 - The air is less dense at higher elevations, so Ch. 5 - A 75 kg skydiver can be modeled as a rectangular Ch. (b) What is the minimum possible value of the coefficient of static friction between the crate and the floor? SALARY. Job Description. Four blocks EACH of mass m = 10 kg are arranged as shown, A:massofeachblock(m)=10kgF1h=90N(toright), Q:Problem# 4: A trailer with a mass of 700 kg is pulled by a 2000-kg 5 - Figure P5.23 shows the velocity graph of a 75 kg Ch. The figure shows the force exerted on the car by the wall over the course of Draw a force diagram for, A:SOlution: Determine the coefficient of kinetic friction between the player and the sled. How much force must he apply to the sled? A football player at practice pushes a 60kg blocking sled across the field at a constant speed. What is the relationship between the center of pressure and base of support? William Moebs, Samuel J. Ling, Jeff Sanny. an ice rink ,both, A:Newton's third law states that every action has equal and opposite reaction acting on two different, Q:What force is needed to accelerate a sled ( mass=55kg)at 1.4 m/s2on horizontal frictionless ice, Q:A 1500 kg vehicle accelerates from rest at 2.5 m/s. (a) What is the tension in the rope if he climbs at a constant speed? The coefficient of kinetic friction between the grass and the sled is 0.30. 5 - Land Rover ads used to claim that their vehicles Ch. 60 N C. 180 N D. 600 N Expert's Answer Solution.pdf Next Previous Related Questions Q: (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? What must aybe, Q:1. a) A boat moves through the water with two forces acting on it. A 5.00105 -kg rocket is accelerating straight up. a. If the Ch. Find an expression for the carts acceleration in Figure P5.18 in terms of the balls mass m and the angle . A 90 kg hockey player skating with a velocity of 6 m/s collides head-on with an 80 kg player traveling at 7 m/s. What happens to the volume of the water? given that A 1100-kg car pulls a boat on a trailer. This diagram indicates all types of, Q:6. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. Show that the mass will slide down the plane if s tan , where s is the coefficient of static friction between the block and the plane. 200 kg football blocking sled is 0.20. Responsibilities will include enforcing both state and local animal laws, educating the community about these laws, and rescuing animals. 5 - It takes the elevator in a skyscraper 4.0 s to Ch. 3 A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball. The coefficient of kinetic friction between the grass and the sled is 0.30.Part AHow much force must he apply to the sled?ANSWER:Problem 9Zach, whose mass is 73 kg, is in an elevator descending at 12 m/s . We have to, Q:The rocket sled shown in Figure 4.5 accelerates at a rate of 30.0 m/s2. vertically down at the rate of 30, A:Given data : Impulse | Physics Quiz - Quizizz