Question

A block of mass 5 kg is at rest on smooth horizontal surface.Watercomingoutof a pipe horizontally at the rate of 2 kgs-1 hits the block with a velocity of 6ms-1. The initial acceleration of the block is

Answer 1

Answer:

(12/5) m/s²

Explanation:

The force exerted by the water jet,

F = v(dm/dt) = (6m/s)(2kg/s) = 12kgm/s²

We know, F = ma => a = F/m = (12kgm/s²)/5kg = (12/5) m/s²