jomiyaw7 jomiyaw7

22-09-2022
Physics

Answered

Turn in homework (need show work):
1. Find the work done against Earth's gravity by a lifter to lift a 40-kg object by 8 m
high. If the lifter takes 16 seconds, what is the power of the lifter?
2. A 2-kg ball moves at 8 m/s. Find the ball's rest energy, kinetic energy, and linear
momentum. When the ball collides into a 4-kg rest ball and then moves together,
what is the speed of the balls?

Answer :

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