1. A pile driver falls a distance of 2.50 m before hitting a pile. Find its velocity as it hits the pile.
2. A sky diver jumps out of a plane at a height of 5000 ft. If her parachute does not open until she reaches 1000 ft, what is her velocity at that point if air resistance is disregarded?
3. A piece of shattered glass falls from the 82nd floor of a building, 270 m above the ground. What is the velocity of the glass when it hits the ground, if air resistance is disregarded?