A stationary 100-kg person is initially holding a 50-kg ball while standing on a skateboard. The person throws the ball to the right, and the ball moves (with respect to the ground) with a speed of 12 m/s. The person on the skateboard ____________.

Question

A. moves to the left with a speed of 6 m/s

B. moves to the left with a speed of 4 m/s

C.remains stationary

D.moves to the left with a speed of 12 m/s

Answer 1

100 x = 50*12
x is 6
the ball went right so the person goes left
It is that conservation of momentum thing.