Question

Aman in a balloon rising vertically with an acceleration of 4.9 ms-2 releases a ball 2s after the balloon is let
go from the ground. The greatest height above the ground reached by the ball is (g=9.8 ms 2)-
(A) 24.5 m (B) 19.6 m
(C) 14.7 m
(D) 9.8 m​

Answer 1

Answer:

option-(D)

Explanation:

Given-

a=4.9ms-2 u=0m/s

t=2s

height s=?

according to the 2nd equation of motion,

s=ut+1/2at^2

=0*2+1/2*4.9*2^2

=0+9.8

s =9.8