A body of mass 1 kg is thrown vertically up with an initial speed of 15 ms-1. What is the magnitude and direction of the force due to gravity acting on the body when it is at the highest point ?

9.8

{m/s}^{2}

directed downwards

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9.8 N directed downwards

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19.6 N directed downwards

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9.8 m/s directed downwards

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Solution

The correct option is B 9.8 N directed downwards
When the body is at highest point, it is acted upon by the gravity alone.

At this point it experience a force of

F = mg = 1 × 9.8 = 9.8 N, directed downwards.

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