Q.

A stone falls freely under gravity. It covers distances h1 , h2 and h3 in the first 5 seconds, the next 5 seconds and the next 5 seconds respectively. The relation between h1 , h2 and h3 is :

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a

h1= h2 = h3

b

h1= 2h2 = 3h3

c

h1= h23 = h35

d

h2 - 3h1 and h3 = 3h2

answer is C.

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Detailed Solution

h1=12g52,h2=12g102 and h3=12g152⇒h1=h23=h35
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A stone falls freely under gravity. It covers distances h1 , h2 and h3 in the first 5 seconds, the next 5 seconds and the next 5 seconds respectively. The relation between h1 , h2 and h3 is :