Magnitude of velocity of a body on reaching the point from which it was projected upwards is
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a
V=0
b
V=2U
c
V=U2
d
V=U
answer is D.
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Detailed Solution
Velocity of body while reaching point of projection is same as at velocity projection in reverse directionwe know , V=u+at while projecting up a=-g time flight=t=2ug velocity on reaching point of projection =V=u+(-g)(2ug) V=-u body on reaching point of projection will have same velocity as at projection but opposite in direction as we obtained negative in the solution