1.

A body is dropped from a height . IT moves a distence of 24.5 meter in the last secound hitting the ground . find the height from which it was dropped?

Answer» ONG>ANSWER:

the body is dropped from a height of 19.6 METERS.

Explanation:

By formula Sn=u+a(n-0.5)

u = 0

a = g =9.8

24.5=9.8(n-0.5)

24.5=9.8n-4.9

9.8n=19.6

n=2.

So total time is two seconds.

Height from which it was dropped H is equal to

H=1/2gt^2

H=0.5*9.8*2*2

H=9.8*2

H=19.6

So the body is dropped from a helght of 19.6 meters.



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