A baseball thrown at an angle of 60.0deg. above the horizontal strikes

horizontal-strikes

#1

A baseball thrown at an angle of 60.0deg. above the horizontal strikes a building 18.0m away at a point 8.0m above the point from which it is thrown. Ignore air resistance.
a) Find the magnitude of the initial velocity of the baseball.
b) Find the magnitude and direction of the velocity of the baseball just before it strikes the building.

Answer:

image