Question

A blue ball travelling at 2m/s hits a red ball at rest on a table. after they collide both balls move in the same direction. Both balls have the same mass. The blue ball continues to move with a reduced velocity of 0.2m/s what is the velocity of the red ball?

Answer 1

answered

Answer 2

momentum before = momentum after
m * 2 + m * 0 = m * .2 + m * v

1.8 = v