Question

A ball is falling from a height of 100 m. After 1 sec, it covers 5 m distance. Find the distance after 4 sec.

Answer 1

Hey mate.
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In 1 sec, it covers 5m.

so, In 4 sec it will surely cover (5×4)m i.e.20 m

Therefore, The total height it will cover in 4 sec is 20 m. and after 20 seconds..it will reach tge ground.

Answer 2

Hi ,

i )velocity of the ball

v = distance / time

v = d/t

v = 5 m/s

ii )

v = 5m /s , t = 4 sec

d = v × t

d = 5 m / s × 4 sec

d= 20 m

after 4 sec the ball covers 20m.

I hope this helps you.