A block of weight 8 kg is resting on a s...

A block of weight 8 kg is resting on a smooth horizontal plane. If it is struck by a jet of water at the rate of `2 kg s^(-1)` and at the speed of 20 m `s^(-1)` , then the initial acceleration of the block is

`15 ms^(-2)`

`10 ms^(-2)`

`2.5 ms^(-2)`

`5 ms^(-2)`

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The correct Answer is:

`5 ms^(-2)`

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