Two buses have equal masses (5,000 kg). Bus A is moving at a velocity of 20 m/s west. Bus B is at rest. When they collide, Bus B bounces off of Bus A. After they collide, Bus A has 0 momentum. What is the final momentum of Bus B?

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four

It is really hard for me right know