You are standing on a concrete slab that in turn is resting on a frozen lake. Assume there is no friction between the slab and the ice. The slab has a weight five times your weight. If you begin walking forward at 2.00 m/s relative to the ice, with what speed, relative to the ice, does the slab move?

Explanation:

Let the speed of slab with respect to ice be v

We shall apply law of conservation of momentum as movement to both slab and myself has emerged due to internal forces

( friction )

2 x m = v x 5 m   ( m and 5m are masses of man and slab )

v =2/5  m/s

velocity of slab wrt  to ice is 2/5 m /s

moving ball hits still ball. mover stops, hit ball moves. momentum transfer.

a and c

c is 100% but i am confused in a