AP Physics 1 Unit 4: Linear Momentum

Which of the following collisions conserves both momentum AND kinetic energy?

A $1.0\text{kg}$ cart moving at $4.0\text{m/s}$ collides and sticks to a $3.0\text{kg}$ cart at rest. What is the speed of the combined carts after the collision?

A $0.10\text{kg}$ ball hits a wall at $20\text{m/s}$ and rebounds at $15\text{m/s}$ (opposite direction). The collision lasts $0.020\text{s}$. What is the average force the wall exerts on the ball?

Cart A ($2\text{kg}$, $3\text{m/s}$ east) collides with Cart B ($4\text{kg}$, $1\text{m/s}$ west) on a frictionless track. After they stick together, what is the velocity of the combined carts?

Two balls of equal mass collide elastically head-on. Ball A moves at $+5\text{m/s}$, Ball B at $-3\text{m/s}$. What are their velocities after the collision?

A force-vs-time graph shows a constant force of $8\text{N}$ acting on an object for $0.5\text{s}$, then $0\text{N}$ for the remaining time. What is the impulse delivered during the entire force application?

An astronaut of mass $80\text{kg}$ floating at rest in space throws a $2.0\text{kg}$ wrench at $10\text{m/s}$. What is the recoil speed of the astronaut?

A $0.20\text{kg}$ baseball moving at $40\text{m/s}$ is caught by a fielder. What is the magnitude of the impulse delivered to the ball during the catch?