Physics, asked by chethanBC8248, 1 year ago

A man through A ball vertically upward it rises through 20m and returned to his hands .what was the initial velocity to the ball and for how much time it remained in the air ( g = 10 m/s2

Answers

Answered by arjun281204
1

At the top v =0

v² = u² + 2as

0= u² +2 × -10 × 20

-u²= -400

u² = 400

u = 20 m/s

v = u + at

0 = 20 -10t

10t= 20

t = 2 seconds to reach the top

total time taken= 2+2 = 4

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