Question

A 3.0-kg object moving 8.0 m/s in the positive x direction has a one-dimensional elastic collision with an object (mass = M) initially at rest. After the collision the object of unknown mass has a velocity of 6.0 m/s in the positive x direction. What is M?
5 kg
answer is 5.12

Related Questions

1. A 10.0 g object moving to the right at 25.0 cm/s makes an elastic head-on collision with a 15.0 g... a 10.0-g object moving to the right at 20.0 cm/s makes a elastic head-on collision with a 15-g objec...