A60-kologram ball and a 3.0 kilogram ball are initially at rest on a frictionless, horizontal surface. Once a compressed spring between the balls is released, the 60-kilogram ball moves to the right at 50
meters per second, as shown below
50m's
3.0 kg www. w
6.0 kg
Frictionless horizontal surface
Which of the following is the speed of the 3.0 kilogram ball after the spring is released?
A
71 m/s
BO 25 m/s
c
10 m/s
D
20 mis