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You carry a 3kg backpack at a constant velocity for 120m and the trip takes you 60s. How much work did you do on the

You carry a 3kg backpack at a constant velocity for 120m and the trip takes you 60s.

How much work did you do on the backpack?

What is the change in momentum of the back during the trip?

After 120m, you stop to speak with a friend, and calculate the? for the backpack.

While you speak, you set the backpack on the floor, if the backpack traveled 1.25m in 3s, what is its Impulse?

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