Question

30. A freely falling body covers .....................
of total distance in 3rd second.
1) 8%
2) 35.5%
3) 55.55% 4) 45.5%​

Answer 1

Answer:

(3) 55.5 %

Explanation:

S = u + (1/2) gt²

u = 0    , g = 10 m / s²

S = (1/2) gt²

After t = 1 s

S1 = 4.9 m

After t = 2 s

S2 = 19.6 m

After t = 3 s

S3 = 44.1 m

percentage is (44.1-19.6  / 44.1 ) m x 100 % = 55.5 % m