A bead is at rest at point A on a frictionless wire. What is the kinetic energy of the bead at point A?

A 1200-kg car moving south at 16.0 m/s collides and sticks to a 3000-kg SUV moving west at 20.0 m/s. What is their speed just after the collision? Enter a numerical answer only.

A batter hits a 0.150-kg baseball that was approaching at 35.0 m/s and sends it back in the opposite direction at 25.0 m/s. What is the magnitude of the impulse delivered to the baseball?

A person applies a constant 25-N force to a heavy rock for 30 seconds, but the rock does not move. What is the work done on the rock?

For a system in simple harmonic motion, the time required to complete one cycle is the:

An object is thrown straight upward with a speed of 19.6 m/s. How long does it take to reach maximum height?

In general, sound travels fastest through:

A 50-kg swimmer dives horizontally from a 200-kg raft with a speed of 2.0 m/s. The raft is initially at rest. What is the speed of the raft immediately after the diver jumps?

A rubber ball and a lump of putty have equal mass and strike a wall with equal speed. The ball bounces back with nearly the same speed, while the putty sticks. Which experiences the greater momentum change?

A light object and a heavy object slide with equal speeds on a level frictionless surface and then move up the same frictionless hill. Which rises to the greater height?