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50 J of work was performed in 20 seconds. How much power was used to do this task? A. 0.4 W B. 2.5 W C. 4 W D. 24.5 W
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1 vote
50 J of work was performed in 20 seconds. How much power was used to do this task? A. 0.4 W B. 2.5 W C. 4 W D. 24.5 W

User Jon Wilson
by
5.6k points

2 Answers

7 votes
Power = W/t
Therefore 50/20 = Power
So... Power is 2.5W
User Mjfgates
by
5.2k points
3 votes
Power = work/time

P = 50/20

P = 2.5 watts

hope this helps :)

User Jtsnr
by
5.5k points
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