Question

A body is projected vertically upward with the velocity of 29.4 m.s it come back to the point of projection after ​

Answer 1

$s = 0 \\ ut - \frac{1}{2} gt {}^{2} = 0 \\ u - \frac{1}{2} gt = 0 \\ t = \frac{2u}{g } \\ t = 2 \times 29.4 \frac{1}{9.8}$

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