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A projectile projected from the ground lands on the first floor of a near by building.Derive an equationfind the range travelled by the projectile.
Dear jUlie ,
ASsume the following data : initial velocity = u m/s , angle of projection = x deg , range = r metres , height of floor = h metres
as the projectile lands on the first floor , the vertical component of velocity must be zero at the floor .
h = u sin x * t ; t = time of flight
t = h / u sinx
therefore , R = u cosx * t
R = h cosx / sinx = h cotx metres.
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