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Shown below is a 59 kg crate that is pushed up a 30° incline by the horizontal force F. The magnitude of the horizontal force is
614 N, and after being pushed 8.9 m, the crate's speed is 4.5 m/s. How much work (in J) is done by the force of friction? Assume
that the crate starts at rest.
F—
59 kg
× J
30°

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