1). Two carts approach each other, collide, and stick together after the collisi

Question

1). Two carts approach each other, collide, and stick together after the collision. This is an example of what type of collision:

perfectly elastic collision

inelastic collision

2). Two carts collide and bounce off each other. If there are no external forces acting on the system, which of the following is true:

both the total kinetic energy and the total momentum can change during the collision

3). A cart with mass 0.21 kg and velocity 0.81 m/s collides on an air-track with a cart with mass 0.26 kg and velocity -0.25 m/s. What is the final velocity (in m/s) of the two carts if they stick together?

Explanation / Answer

perfectly inelastic collision
The total kinetic energy can change during the collision but the total momentum of the carts must be the same before and after the collision

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