An object does 30 J of work in 3 s. What is its power?

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Prepare for the Year 10 Force and Motion Test. Utilize flashcards and multiple-choice questions with clear hints and explanations to ensure success. Equip yourself for excellence on your exam!

Multiple Choice

An object does 30 J of work in 3 s. What is its power?

Explanation:
Power is the rate at which work is done, equal to work divided by the time taken. Here, 30 joules of work are done in 3 seconds, so P = 30 J / 3 s = 10 J/s, which is 10 watts. So the object delivers power at 10 W, meaning it does 10 joules of work each second.

Power is the rate at which work is done, equal to work divided by the time taken. Here, 30 joules of work are done in 3 seconds, so P = 30 J / 3 s = 10 J/s, which is 10 watts. So the object delivers power at 10 W, meaning it does 10 joules of work each second.

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