A ball moving with a certain velocity hits another identical ball at rest. If the plane is frictionless and collision is elastic, the angle between the directions in which the balls move after collision will be _______.
A. 30°
B. 60°
C. 90°
D. 120°
Answer:C
A ball moving with a certain velocity hits another identical ball at rest. If the plane is frictionless and collision is elastic, the angle between the directions in which the balls move after collision will be _______.
A. 30° B. 60° C. 90° D. 120°