from the edge of the rooftop of a building, a boy throws a stone at an angle of

Question

from the edge of the rooftop of a building, a boy throws a stone at an angle of 25 degree above the horizontal. The stone hits the ground 4.20 s later, 105 m away from the base of the building. (ignore air resistance.) (a) for the stones path through the air, sketch graphs x,y,Vx,and Vy as functions of time.(b) find the initial velocity of the stone. (c) find the initial height h from which the stone was thrown. (d) find the maximum height H reached by the stone

Explanation / Answer

b)2t = 4.2 =>t = 2.1sec Horizontal velocity = 105/(4.2) = 25m/sec Vcos(Radians(25)) = 25 =>V = 27.58444797m/sec c)0m d)Maximum height = 5.689544953m

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