Question

10. Two stones are dropped from different heights 16 m
and 25 m. The ratio of the times taken by them to
reach the ground will be

Answer 1

Answer:

Here in this question we have to use the formulae of the newtons laws of motion which is h = ut + gt²/2 .

Here we know that u =0 m/s.

If we take the time taken by each as t1 and t2 respectively then we will get.

For the first 16 = g(t1)²/2 ......(1)

For the second 25 = g t(2)²... (2)

If we divide the equation 1 by 2 then we will get:-

16/25 ={ t (1)/t(2)}² .

Now taking the square roots on both the sides we will get.

So, we will get t(1)/t(2) = 4/5 or the ratio will be t1:t2 = 4:5.

Answer 2

Answer:

4:5 is the correct answer