Question

A ball is dropped from the top of a
building and its time of fall is t. In the
last t/4th time of its fall, it travels 1.4
metres. Find out the height of the
building?​

Answer 1

Answer:

22.4 m

Explanation:

H = 1/2gt²   -------(1)

1.4 = 1/2g(t/4)²

1.4 = 1/2gt²/16  --------(2)

Divide (1) by (2)

H/1.4 = t²/t²*16

H = 16*1.4

H = 22.4 m

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