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A 44 kg block of ice slides down a frictionless incline 1.5 m long and 0.82...

A 44 kg block of ice slides down a frictionless incline 1.5 m long and 0.82 m high. A worker pushes up against the ice, parallel to the incline, so that the block slides down at constant speed.

(a) Find the magnitude of the worker's force.
N


How much work is done on the block by the following forces? (Include the sign of the value in your answer.)

(b) the worker's force
J

(c) the gravitational force on the block
J

(d) the normal force on the block from the surface of the incline
J

(e) the net force on the block
J

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