The following are work and energy problems. Use the equations in your book/notes to solve them.

1) How much work is required to lift a kilogram piano to a window whose height is meters from the ground? Joules

2) If it takes the movers 3 minutes to lift the piano to the window, what is their power? Watts

3) A child begins down a frictionless water slide with an initial velocity of m/s. If the slide is m tall, what is the final velocity of the child as she leaves the slide? m/s

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