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A 70.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 4.50 m. What is the work done on the man by (a) the gravitational force and (b) the escalator? (a) Number Units (b) Number Units

A 70.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 4.50 m. What is the work done on the man by (a) the gravitational force and (b) the escalator? (a) Number Units (b) Number Units

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A 70.0 − kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 4.50 m . What is the work done on the man by (a) the gravitational force and (b) the escalator? (a) Number i Units ◻ (b) Number i Units ◻

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