A ball is thrown horizontally from a cliff such it strikes the ground after 5s. The line of sight makes an angle 37° with the horizontal . The initial velocity of projection in ms-1 is
Asked by valavanvino1011
11th August 2018,
4:07 AM
Answered by Expert
Answer:
As shown in figure, if projectile strikes the ground by making an angle 37º with horizontal direction,
then at the point of hitting ground, resolved horizontal componenet uh of projectile velocity
and the vertical component uv are related as, ( uv / uh) = tan 37
uv is the velocity gained due to gravity after 5 s from the time of projection and it is given by, uv = g×t = g×5.
(Initial vertical component of velocity is zero, because of horizontal projection).
then 
Answered by Expert
11th August 2018,
6:45 AM
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