A particle is released from a height of 20m. Find time of fall & velocity of fall.
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Answer:
Hey buddy! here's the perfect solution.
Data
height h = 20 m
initial velocity for downward motion in free fall is zero vi = 0m/s
time t =?
Final velocity vf =?
For time applying the equation
h = 1/2 gt²
t² = 2h/g
t² = 2×20/9.8
t² = 40/9.8= 4
t= /4
t = 2 seconds
Now for final velocity ..by applying equation
Vf =vi +gt
Vf = 0 + 9.8×2
Vf = 19.6 m/s
Hope it helps you buddy!
Explanation:
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