1.A cyclist and her bike have a combined mass of 60.0 kg. She is able to cycle up a hill that changes her altitude by 4.00 x 10 2 m in 1.00 min. Calculate.

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Presentation transcript:

1.A cyclist and her bike have a combined mass of 60.0 kg. She is able to cycle up a hill that changes her altitude by 4.00 x 10 2 m in 1.00 min. Calculate the power she generated. m = 60 kg h = 400 m g = 9.81 N/kg W = ? W = mg∆h = (60)(9.81)(400) = J W = J t = 1 min = 60 s P = ? The power generated was 3920 W.

2.A mover pushes a 25.5 kg box with a force of 85 N down a 15 m corridor. Calculate the power generated if it takes him 8.30 s to reach the end of the hallway. F = 85 N d = 15 m W = ? W = F∆d = (85)(15) = 1275 J W = 1275 J t = 8.3 s P = ? The power generated was 150 W. 4.6 Prac. #2-6 UC #1-4

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