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?

Question

Haylie Riley

Physics

18 May, 09:50

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?

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Franklin Jackson · Answer 1

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