A block of metal weighing `4kg` 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 `10ms^(-1)` Calculate the intial acceleration of the blocks .

Answer

`2.5 m//s^(2)`

Explanation

Here, `m=2kg, (dm)/(dt) = 1 kg s^(-1)`
`upsilon = 5m//s, a = ` ?
`F = ma = (d)/(dt) (p) = (d)/(dt) (m upsilon) = upsilon (dm)/(dt)`
`:. a =(upsilon (dm//dt))/(m) =(5 xx1)/(2) = 2.5 m//s^(2)` .