11. Momentum & Impulse

Which of the following best describes the difference between an elastic and an inelastic collision?

Which of the following is true about head-on collisions?

When a vehicle crashes into a solid object, how many distinct types of collisions typically occur during the event?

In the context of vehicle impacts, how many distinct types of collisions typically occur during a single accident?

In which type of collision is $\mathrm{momentum}$ always conserved?

A $2\mathrm{kg}$ cart moving at $3m/s$ collides head-on with a $1\mathrm{kg}$ cart moving at $-2m/s$. After the collision, the $2\mathrm{kg}$ cart moves at $1m/s$ and the $1\mathrm{kg}$ cart moves at $4m/s$. What type of collision is this?

In a collision that is not perfectly elastic, which of the following statements is true?

An object at rest on a flat, horizontal surface explodes into two fragments, one seven times as massive as the other. The heavier fragment slides 8.2 m before stopping. How far does the lighter fragment slide? Assume that both fragments have the same coefficient of kinetic friction.

Which statement best describes the difference between elastic and inelastic collisions?

In the context of types of collisions, which of the following statements is correct if only $\frac{1}{2}$ of all collisions involve conservation of kinetic energy?

In a frontal collision between two objects, which of the following statements is true if the collision is perfectly elastic?

Collisions on city streets are largely at intersections because of which of the following reasons?

In which type of collision is $p$ (momentum) conserved?

Why are incidents involving multiple types of collisions particularly serious in physics?