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A6.1 - Work, Energy and Power

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✅EvaluateQuestion 1 of 20

In Physics, work is done when

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✅EvaluateQuestion 2 of 20

The SI unit of work is the

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✅EvaluateQuestion 3 of 20

Which quantity is needed to calculate work done?

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✅EvaluateQuestion 4 of 20

The SI unit of power is the

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✅EvaluateQuestion 5 of 20

Power tells us how

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✅EvaluateQuestion 6 of 20

A student pushes a wall that does not move. The work done is

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✅EvaluateQuestion 7 of 20

One watt is equal to

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✅EvaluateQuestion 8 of 20

A force of 40 N moves a box 5 m. How much work is done?

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✅EvaluateQuestion 9 of 20

Which situation involves work being done in Physics?

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✅EvaluateQuestion 10 of 20

A machine does 600 J of work in 12 s. Its power output is

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✅EvaluateQuestion 11 of 20

Two machines do the same work. The more powerful one

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✅EvaluateQuestion 12 of 20

A student weighing 500 N climbs stairs of height 3 m. How much work is done?

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✅EvaluateQuestion 13 of 20

Which change will increase the power of a machine doing the same work?

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✅EvaluateQuestion 14 of 20

A load of weight 800 N is lifted vertically through 2.5 m in 5 s. What is the power output?

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✅EvaluateQuestion 15 of 20

A person does 1800 J of work climbing stairs in 12 s. What is their power output?

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✅EvaluateQuestion 16 of 20

Which situation shows the greatest power output?

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✅EvaluateQuestion 17 of 20

A machine lifts a load using the same force but over a greater distance. What happens to the work done?

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✅EvaluateQuestion 18 of 20

Why is climbing stairs a good method for measuring human power output?

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✅EvaluateQuestion 19 of 20

A motor does the same work as another but takes twice as long. Compared to the first motor, its power is

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✅EvaluateQuestion 20 of 20

A student climbs stairs twice as fast but with the same weight and height. The work done is

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✅EvaluateQuestion 1 of 20

In Physics, work is done when

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