A body freely falling from a height
7h/16
describes in the last second of its fall
The height h is (g=10ms-2)
1) 80 m 2) 45 m 3) 160 m 4) 40 m
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Answer. The time taken to fall a from a height of 'h' to ground under gravity = √2h/g = t. In time (t-1) it travels h - 7h/16 = 9h/16. ∴ (t-1) = √2(9h)/16g.
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