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You use a rope to lift a 30kg box up to the second story of a...

You use a rope to lift a 30kg box up to the second story of a building. As you lift the box the tension in the rope is 320N. The second floor is 5m above the first floor and the box is initially at rest when you start pulling on the rope. For simplicity assume that rope is massless.

a) At what rate does the box accelerate? Which direction is the acceleration? Show your work.
b) How fast will the box be traveling by the time you have lifted it up to the second floor? Show your work. c) How long will it take to lift the box to the second floor? Show your work.

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