In this elastic collision two bowling balls each of mass 5.0 kg travel in opposite directions toward each other. Ball A has a velocity of 2.0 m/s and Ball B has a velocity -5.0 m/s. If after the collision Ball B has a velocity of -1.0 m/s, what is the velocity of Ball A after the collision?

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?