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

Options

A. `25 ms^(-1)`
B. `5 ms^( -1)`
C. `10 ms^(- 2)`
D. None of these.

Answer

a

Explanation

Here`a=(Deltam)/(Deltat)xx(upsilon)/(M)=(1)/(1)xx(5)/(2)=2.5 ms^(-2)`
(a) is the choice.