Question

Two bodies A (of mass 1 kg) and (of mass 3 kg) are dropped from heights of 16 m and 25 m respectively. The ratio of the time taken by them to reach the ground is
a) 5/4
b) 12/5
c) 5/12
d) 4/5

❥ With full explanation (◍•ᴗ•◍)❤​

Answer 1

Answer:

From equation of motion we know that when a body is dropped

$\tt h = \frac{1}{2} gt²$

$\tt So \frac{ t_{1} }{ t_{2}} = \sqrt{ \frac{h_{1}}{1_{2}} } = \sqrt{ \frac{16}{25} } = \frac{4}{5}$

Hence (D) is the correct answer

Answer 2

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From equation of motion we know that when a body is dropped

$\tt h = \frac{1}{2}$gt²

$\tt So \frac{ t_{1} }{ t_{2}} = \sqrt{ \frac{h_{1}}{1_{2}} } = \sqrt{ \frac{16}{25} } = \frac{4}{5}$

Hence (D) is the correct answer