Physics-
General
Easy
Question
A body falls freely from the top of a tower. It covers 36% of the total height in the last second before striking the ground level. The height of the tower is
- 50
- 75
- 100
- 125
The correct answer is: 125
Let height of tower is 
and body takes 
time to reach to ground when it fall freely
In last second i.e. 
body travels =
It means in rest of the time i.e. in 
it travels
Now applying equation of motion for
From (i) and (ii) we get,
and 
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