Answer to Question #83620 in Physics for Triumph

Question

1) A 0.04kg ball is thrown from the top of a 30m tall building at an unknown angle above the horizontal.
The ball attains a maximum height of 10m above the top of the building before striking the ground.
If air resistance is neglected, sketch the trajectory of the motion of the ball. Hence, calculate the vertical component of the velocity at the point of projection and the final velocity of the ball at the ground level.