Harris790 Harris790

25-05-2015
Chemistry

Answered

Use this formula to solve this problem: Power (P) = Work (W) ÷ time (t) Joachim's body supplies a force of 450 N to run up a 20 meter hill in 15 seconds. How much power is involved in Joachim's run up the hill? A. 22.5 Watts B. 30 Watts C. 600 Watts D. 300 Watts

Answer :

lulu1991 lulu1991

25-05-2015

The answer is C. When solving this problem, we also need another formula: Work=Force*Distance. With this formula, we can get the work of Joachim in this process is 450*20. According to the first formula, the Power=450*20/15=600 Watts

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