# Projectile velocity: Boy throws a stone from the edge of a cliff

Not what you're looking for? Search our solutions OR ask your own Custom question.

Q. A boy throws a stone from the edge of a cliff with an initial speed (Vo) at an angle of 30 degrees above the horizontal. when it hits the surface of a lake 22m below the top of the cliff, the stone is moving at a speed of 25 meters per second. what was its initial velocity.

Â© BrainMass Inc. brainmass.com March 6, 2023, 1:14 pm ad1c9bdddfhttps://brainmass.com/physics/velocity/projectile-velocity-boy-throws-stone-edge-cliff-9578

#### Solution Preview

Let the initial speed was vo m/s at an angle 30 degree above the horizontal.

By law of conservation of energy:

Initial ...

#### Solution Summary

The projectile velocity functions for a boy throwing a stone from the edge of a cliff is determined. With formulas and explanations, the problem is solved.

$2.49