Q.

A projectile is launched from point A with the initial conditions shown in figure.  Determine the y-coordinate of the point on trajectory above point B.

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a

y=43.45m

b

y=15.75m

c

y=115m

d

y=300m

answer is A.

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Detailed Solution

y=xtan⁡30∘−gx22(68)2cos2⁡30∘Put x=300Solving we gety=43.45m
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A projectile is launched from point A with the initial conditions shown in figure.  Determine the y-coordinate of the point on trajectory above point B.