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How much work is required to lift a 3kg backpack off the floor to a height of 1.3m? If you lift the backpack in 2s,

How much work is required to lift a 3kg backpack off the floor to a height of 1.3m?

If you lift the backpack in 2s, how much power did you generate?

If you then drop the backpack, what is its change in momentum? (Hint: you will need to find how long the backpack took to fall and the backpacks final velocity)

What is the impulse of the backpack when it hits the ground?

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