A body released from a great height, falls freely towards the earth. Another body is released from the same height exactly one second later. Then the separation between two bodies, two seconds after the release fo second body is.

Options

A. 4.9 m
B. 9.8 m
C. 19.6 m
D. 24.5 m

Answer

D

Explanation

`h_(1) = (1)/(2) g(C)_(2)` distance travelled by 1st object
`h_(2) = (1)/(2) g(B)_(2)` distance travelled by 2nd object
`h_(2) - h_(1) = (1)/(2) g(9-4) = (5)/(2) xx 9.8 = 24.5`