Q11. A ball is dropped from a height of 40 m. If the velocity increases uniformly at the rate of
20m/s^2, what will be the velocity when it strikes the ground. After what time will it strike the
ground?
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2
Answer:
u=0
v=40
acc. =20m/s square
t=?
20=40-0/t
20t=40
t=40/20
=2s
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