A 150-Kg Ball Makes an Elastic Head-On Collision with a 1

Multiple Choice

A 1.50-kg ball makes an elastic head-on collision with a 1.00-kg ball.Before the collision,the speed of the 1.50-kg ball is 1.0 m/s,and the speed of the 1.00-kg ball is zero.The speed of the 1.00-kg ball after the collision is

A) greater than 1.0 m/s,but less than 2.0 m/s.
B) 2.0 m/s.
C) less than 1 m/s.
D) 1 m/s.
E) zero.