Question

A cart with a spring on the end of it is moving to the right in the positive x direction) on a frictionless air track as shown in the figure at the right. The initial position of the cart is arbitrary. It keeps going until it hits a wall, the spring compresses, and the cart bounces off the wall and moves in the opposite direction. Select all the graphs that could represent each of the following quantities as a function of time. (In each graph, the axes cross at the origin of the two coordinates.) Put N if none of the answers work. → B

Answer 1

2. C is correct.

initially it is moving with constant velocity then it strike with wall and velocity decreases goes to zero then it rebounce and direction of velocity reverse and becomes of same magnitude.

3. C is correct

P=mV so it will be same as velocity.

4. E is correct.

it had an initial kinetic energy then it strike with wall and kinetic energy decreases with velocity and goes to zero then it rebounce and regain its kinetic energy.

5. G is correct

at the time of collision the spring compress and potential energy stores in it the as the spring expands again the energy decreases and changes to kinetic energy.

6. A is correct

Total mechanical energy of the system remains constant.

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