Question

a ball is dropped from height of 50m.Find the time taken to reach the ground​

Answer 1

Answer:

Distance = 50m

Speed = Gravity = 9.8 m/s

Time Taken = Distance /Speed = 50/9.8 = 5.1 seconds. (approx.)

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Answer 2

Explanation:

h-50m

u-0

a-9.8m/s

*speed just before it hits the ground* :

v²-u²=2as

v²-(0)²=2×(9.8×50)

v²=980

v = _/980

v= 31.3

how long it took to reach the ground:

v = u + at

=50+(9.8)t

9.8t=50

t=50/9.8

t=5.12s

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