A particle P is projected from a point A with speed 32m/s at an angle of elevation ? where sin = 3/5. The point 0 is on the horizontal ground, with 0 vertically below A and OA = 20m. The particle P moves freely under gravity and passes through the point B, which is 16m above the ground, before reach the ground at Point C.
a) What is the time of the flight from A to C:4.8s
b)the Distance OC: 120m
C)the speed of P at B.
Can someone guide me through part C please, explaining the logic behind it.
(I have the mark scheme but it isn't helping.)