A block of metal weighing `2kg` is resting on a frictionless plane . It is struck by a jet of releasing water at the rate of `1 kg s^(-1)` and at a speed of `5ms^(-1)` Calculate the intial acceleration of the blocks .

Explanation

Force exertin on block `F=v(dm)/(dt)=4xx3=12N`

so acceleration of the block `a=(F)/(m)=(12)/(5)=2.4ms^(-1)`