Practice Power (A.3.6) - Theme A: Space, Time, and Motion

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9 questions

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Exercise
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Quiz
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6 sample questions

Question 1.
What is the formula for power?
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Remember, power involves work done over time.
Question 2.
How many watts are in 1 Joule per second?
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Think about the definition of a watt.
3Question 3.
What is the formula for calculating power?
- P = E/t
- P = W/t
- P = t/W
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Focus on work done and time.
4Question 4.
True or False: 1 Watt is equal to 1 joule per second.
- True
- False
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Think about how power is measured.
Question 5.
A battery-powered device operates at 250 W for 4 hours. How much energy does it consume in joules?
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Convert hours to seconds before multiplying.
Question 6.
If a person can lift a 50 kg box 2 meters in 4 seconds, what is the power exerted? (g = 9.81 m/s²)
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Calculate the work done first using W = F * d, then find power.

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