09 A projectile is fired from a point 10 m below ground level vertically upwards. It passes a target
20 m above ground level and 2 seconds later passes another target which is 50 m above ground
level. Assume that air resistance can be ignored.
a) Find the speed of projection of the projectile.
b) Find the maximum height above the ground reached by the projectile.
C) Find the time taken by the projectile to reach the first target.