Physical Science

19. How much work does the 50 kg student do who climbs 3 meters up the stairs? a. 150 J b. 150 N c. 1500 J d. 1500 N. 20. When an object moves in a straight line at a constant speed, we KNOW that: a. There must be an unbalanced force acting on that object. b. The total force acting on the object is zero. c. The velocity of the object is ... ................
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