Question

A metal ball of 5 kg Falls from height of 490 m how much time will it take to reach the ground.(g =9.8m/s²) ​

Answer 1

Explanation:

s = 490 m

a = 9.8 m/s²

u = 0 m/s

s = ut + ( at² / 2 )

490 = 9.8t² / 2

490 = 4.9t²

t² = 490 / 4.9

t² = 100

t = 10sec

Note : Mass of an object doesn't change the time taken in the free fall

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