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

Physics

Alexa Spence

25 June, 08:23

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?

+2

Answers (1)

Know the Answer?

Rachael Bowman · 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