3-kg object moving with a velocity of 7 m/s in the positive x direction strikes and sticks to a 3-kg object moving with a speed of 2 m/s in the same direction. How much kinetic energy is lost in this collision?

A 75.0 kg ice hockey goalie, originally at rest, catches a 0.150 kg hockey puck slapped at him at a velocity of 33.0 m/s. Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would their final velocities (in m/s) be in this case? (Assume the original direction of the ice puck toward the goalie is in the positive direction. Indicate the direction with the sign of your answer.) puck (m/s) goalie (m/s)

A 0.600 kg tennis ball, moving with a speed of 4.50 m/s, has a head-on collision with a 0.090 kg ball initially in the same direction at a speed of 3.00 m/s. Assuming a perfectly elastic collision, determine the speed and direction of each ball after the collision.

A 0.060 kg ball, initially moving at a speed of 10.0 m/s, is struck by a bat causing it to rebound in the opposite direction at a speed of 15.0 m/s. Calculate the magnitude of the impulse on the ball in the collision. Recall the impulse-momentum theorem.

Two ice skaters with masses of 22.8 kg and 11.1 kg slide toward each other on a frictionless surface with speeds of 3.6 m/s and 2.8 m/s respectively. The two ice skaters lock hands after colliding head-on. Find the final speed of the two ice skaters.

A 62.0 kg ice hockey goalie, originally at rest, catches a 0.150 kg hockey puck slapped at him at a velocity of 20.0 m/s. Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would their final velocities (in m/s) be in this case? (Assume the original direction of the ice puck toward the goalie is in the positive direction. Indicate the direction with the sign of your answer.)   puck _______________ m/s   goalie ______________ m/s

Object 1 with a mass of 4.70 kg, moving right at a speed of 7.80 m/s along a frictionless surface, collides head-on with Object 2 with a mass of 3.30 kg moving left at a speed of 10.6 m/s. After the collision, the Object 1 is moving left at 2.40 m/s.

Two blocks of clay, one of mass 1.00 kg and one of mass 6.00 kg, undergo a completely inelastic collision. Before the collision one of the blocks is at rest and the other block is moving with kinetic energy 32.0 J. If the 6.00 kg block is initially at rest and the 1.00 kg block is moving, what is the initial speed of the 1.00 kg block?

An 80 kg running back moving at 5.0 m/s attempts to dive directly across the goal line for a touchdown. Just as he reaches the line, he is met head-on in mid-air by two 75 kg linebackers both moving in the direction opposite the running back at 2.8 m/s. They all become entangled as one mass. What is the velocity of the football players often the collision?

A cart of mass 0.3kg traveling at 3m/s on a horizontal frictionless track collides with a cart of mass 0.45kg traveling at 2.5m/s towards it.  The carts stick together after the collision.  What is the final velocity of the carts