A stone is thrown from ground level at 72 m/s. Its speed when it reaches its highest point is 46 m/s.

Question

Find the angle, above the horizontal, of the stone's initial velocity.
Answer in units of degree

Answer 1

Vo = 72m/s[Ao].
Xo = 46 m/s.

Xo = 72*Cos A = 46.
Cos A = 46/72 = 0.63889.
A = 50.3o