Home Physics Motion in a Straight Line Mix A body falls freely from the top of a tower.…
Physics Motion in a Straight Line Mix MCQ (Single Correct)

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

A
50 m
B
75 m
C
100 m
D
125 m

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Text Solution

Verified by Experts
The correct answer is:
D

Let height of tower is h and body takes t time to reach to ground when it fall freely.

…(i)

In last second i.e. sec body travels = 0.36 h

It means in rest of the time i.e. in sec it travels

Now applying equation of motion for ( t – 1) sec

…(ii)

From (i) and (ii) we get, and

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