1.

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 :

Answer»

`25 MS^(-1)`
`5 ms^( -1)`
`10 ms^(- 2)`
NONE of these.

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


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