Work And Power Worksheet Answers

1 joule=1N.1m Power Power is the rate of work done in a unit of time. The unit of the power from the equation given above, joule/s, however, we generally use the unit of power as watt. 1joule/s=1watt ENERGY The capability of doing work is called energy. If something has energy then it can do work. It has the same unit with work joule.

1. You must exert a force of 4.5 N on a book to slide it across a table. If you do 2.7 J of work in the process, how far have you moved the book? 2. A child pulls a sled up a snow-covered hill. The child does 405 J of work on the sled. If the child walks 15 m up the hill, how large of a force must the child exert? 3.

AP Physics 1- Work, Energy, & Power Practice Problems ANSWERS FACT: The amount of work done by a steady force is the amount of force multiplied by the distance an object moves parallel to that force: W = F x cos (θ). The units are N. m, which equal a Joule (J). Positive work is done by a force parallel to an object’s displacement. Negative …

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Work, Energy and Power – page 1 Work, Power and Energy Worksheet Work and Power 1. Calculate the work done by a 47 N force pushing a pencil 0.26 m. 2. Calculate the work done by a 47 N force pushing a 0.025 kg pencil 0.25 m against a force of 23 N. 3. Calculate the work done by a 2.4 N force pushing a 400. g sandwich across a table 0.75 m …

answer choices the amount of work an object does the rate at which force is applied the amount of matter in an object the rate at which work is done Question 8 60 seconds Q. Johann Sebastian Bach carries his piano up the stairs doing 2500 Joules of work. If he did this in 25 seconds, how much power did he do? answer choices 62,500 Watts 6200 Wats

You pull the free end of the rope 2 m with a force of 400 N to lift the lumber off the ground. How much work have you done? – 2 no 3. A 150 N boy rides a 60 N bicycle a total of 200 m at a constant speed. The frictional force against the forward motion of the bicycle equals 35 N. How much work does the boy do? Explain your answer.