QA A boy standing on the edge of a cliff (don’t worry there is a sturdy railing) throws a stone up into the air at an angle of 40° from the horizontal at a velocity of 10 m/s. The vertical distance from the water to where he threw the stone is 20 m. How long does the stone take to hit the water? How far from the cliff does it land? What is its final velocity when it hits the water? QB The father of the boy in QA also throws a stone into the water. He throws the stone at the same 40° angle but the vertical distance from the water to where he threw the stone is 21 m. He throws the stone with an initial velocity of 25 m/s. How long does his stone take before it hit the water? What is the stone’s maximum height above the water?
