A 300 Kg red bumper car is traveling with a velocity of +2.5 m/s. Over a 0.5 second time frame it has collided, head-on, into a 500 Kg black bumper car that is initially at rest. After the elastic collision, the red bumper car transfers all its momentum to the black bumper car. What is the change in momentum of the black bumper car?

A 1.0 [kg] ball moving east collides head-on with a 2.0 [kg] ball that is also moving east with speed 2.0 [m/s]. What is the initial speed of the 1.0 [kg] ball if the final momenta of the two balls after the collision is 7.0 [kg m/s] East?

Object A, sliding on a frictionless surface at 3.2 m/s, hits a 2 kg object B which is at rest. The collision of A and B is completely elastic. After the collision, A and B move away from each other at equal and opposite speeds. What is the mass of object A?

A 68.5-kg person throws a 0.0490-kg snowball forward with a ground speed of 34.5 m/s. A second person, with a mass of 57.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.65 m/s, and the second person is initially at rest. What are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and the ice. (Take the direction the snowball is thrown to be the positive direction. Indicate the direction with the sign of your answer.) thrower = ? / m/s (Give your answer to at least three decimal places.) catcher = ? / m/s