4) The graph below shows the force exerted on a rocket-propelled cart on a frictionless track as a function of position. The cart has two rocket engines. One points to the right, which we will call the positive direction. The other points to the left, the negative direction. The cart, which has a mass of 2.3 kg, starts at a position of 0 meters with a velocity to the right of 20 m/s. Force (Newtons) 400 300 200 100 0 -200 -300 0 2 4 6 8 10 12 14 16 18 20 22 24 Position (meters) a) How much kinetic energy does the cart have at x=12 meters? b) How much kinetic energy does the cart have at x=20 meters? c) What is the cart's speed at x=20 meters?

4) The graph below shows the force exerted on a rocket-propelled cart on a frictionless track as a function of position. The cart has two rocket engines. One points to the right, which we will call the positive direction. The other points to the left, the negative direction. The cart, which has a mass of 2.3 kg, starts at a position of 0 meters with a velocity to the right of 20 m/s. Force (Newtons) 400 300 200 100 0 -200 -300 0 2 4 6 8 10 12 14 16 18 20 22 24 Position (meters) a) How much kinetic energy does the cart have at x=12 meters? b) How much kinetic energy does the cart have at x=20 meters? c) What is the cart's speed at x=20 meters?

Name: 4) The graph below shows the force exerted on a rocket-propelled cart
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Description: 4) The graph below shows the force exerted on a rocket-propelled cart on africtionless track as a function of position. The cart has two rocket engines. Onepoints to the right, which we will call the positive direction. The other points tothe left,

Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter2: Newtonian Mechanics-single Particle

Section: Chapter Questions

Problem 2.54P: A potato of mass 0.5 kg moves under Earth’s gravity with an air resistive force of −kmv. (a) Find...

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