physics
posted by Anonymous .
A body is to be projected at an angle with a velocity 24m/s just to pass over an obstacle 14m high at adistance of24m.then angle is what.

Do the vertical problem first
Vi = initial speed up
then
v = Vi  g t
at top, v = 0
0 = Vi  g t
Vi = g t
t = Vi/g
h = 0 + Vi t  .5 g t^2
14 = Vi^2/g  .5 Vi^2/g
28 g = Vi^2
Vi = sqrt (28 g)
Vi = 16.6 m/s
Vi = v sin theta
16.6 = 24 sin theta
so ....
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