If we drop three watermelons weighing $2 k g$ , $4 k g$ and $6 k g$ respectively from the same height and at the same time, which one of it will reach the ground first? (Given: negligible air resistance)

Watermelon weighing $2 k g$

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Watermelon weighing $4 k g$

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Watermelon weighing $6 k g$

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All three will reach at the same instant.

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Solution

The correct option is C
All three will reach at the same instant.

If $G$ is universal gravitational constant and $M_{e}$ is the mass of earth and $R_{e}$ is the radius of earth then acceleration due to gravity $g$ would be:
$g = \frac{G M_{e}}{R_{e}^{2}}$
So, the acceleration due to gravity is independent of the mass of the body. Hence, all the bodies will hit the ground at the same time.

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