Homework Answers
considering momentum along vertical
initial vertcial momentum = final vertical momentum
0 = v1 sin 40 - v2 sin x
v2 sin x = 7.7 sin 40
v2 sin x = 4.95 ....(i)
considering momentum along horizontal
20= 7.7 cos 40 + v2 cos x
v2 cos x = 14.1 ...(ii)
squaring and adding (i) and (ii)
( v2 sin x)^2 + ( v2 cos x)^2 = 4.95^2 + 14.1^2
v2 = 14.945 m/s
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