a man stands on the roof of a building of height 16.1m and throws a rock with a velocity of magnitude 26.8 m/s at an angle of 28.7 above the horizontal.
a) Calculate the maximum height above the roof reached by the rock.
b) Calculate the magnitude of the velocity of the rock just before it strikes the ground.
c) calculate the horizontal distance from the base of the building to the point where the rock strikes.