A 2.0-kg block slides down a plane (inclined at 40° with the horizontal) at a constant speed of 5.0 m/s. At what rate is the gravitational force on the block doing work?
a. +98 W
b. +63 W
c. zero
d. +75 W
e. ?75 W
b
Physics & Space Science
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What will be an ideal response?
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