ACD ?
btw waht's (B) ??
A meter scale lying horisontally on a floor is struck by a ball as shown in fig. Which of the following quantities is conserved for the ball scale system.
A. Linear momentum
B. Kinetic energy of transmission
C. Angular momentum
D. Linear momentum and angular momentum both
I think (B) means translational K.E.
I agree that the answer should be D