A81 kg man lying on a surface of negligible friction shoves a 79 g stone away from himself, giving it a speed of 4.5 m/s. what speed does the man acquire as a result?

The speed of the man is 4.54 m/s.

Explanation:

Given that,

Mass of man=8100 g

Mass of stone = 79 g

Speed  = 4.5 m/s

We need to calculate the speed of the man

Using momentum of conservation

Where,

=mass of man

=mass of stone

=velocity of man

=velocity of stone

Put the value in the equation

As the stone is away from the man

So, the speed of stone is zero

Hence, The speed of the man is 4.54 m/s.

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