Power - The rate at which work is done

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The rate at which work is done.
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Power - The rate at which work is done (8.1.1) (2.3.5) A person does 48 J of work in 6.0 s. What is their power output?

How much energy does a 75 Watt light bulb consume in a minute? (60 s) 4500 J

1 horsepower = 745.7 Watts, 1 kW = 1000 Watts My 30. HP van could go 25 m/s top speed. What was the force resisting its motion? 1 horsepower = 745.7 Watts, 1 kW = 1000 Watts 890 N

Joe Mama does 613 J of work in 2.13 seconds. What is his power output? P = W/t = (613 J)/(2.13 s) = 288 W 288 W

Ima Wonder can put out 127 W of power Ima Wonder can put out 127 W of power. What time will it take her to do 671 J of work? P = W/t, t = W/P = (671 J)/(127 W) = 5.28 s 5.28 s

What work does a 1.5 HP motor do in 1 minute? (3 hints) (1 hp = 745.7 w) P = (1.5 HP)(745.7 W/HP) t = 60 s P = W/t, W = Pt = (1118.55 W)(60 s) = 67113 J 67,000 J

Bob N. Frappels slides a box with 43 N of force at a constant speed of 5.3 m/s. What is his power output? P = Fv = (43 N)(5.3 m/s) = 227.9 W = 230 W 230 W

Frieda People can put out 430. W of power Frieda People can put out 430. W of power. With what speed can she push a car if it takes 152 N to make it move at a constant velocity? P = Fv v = P/F = (430. W)/(152 N) = 2.83 m/s 2.83 m/s

My son and I climbed from the Cold Springs campground on Mt Adams to the summit. We started at 7:00 am and got to the top at 1:00. I have a mass of about 75 kg, and was carrying an 18 kg pack with skis. What was my average power output if the elevation gain is 2030 m? 86 W

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