3. Energy and Work
Power — Quiz
Test your understanding of power with 5 practice questions.
Practice Questions
Question 1
Which of the following units is equivalent to a Watt?
Question 2
A car engine generates a force of $ 1500 \text{ N} $ to move the car at a constant velocity of $ 20 \text{ m/s} $. What is the power output of the engine?
Question 3
If a person pushes a box with a force of $ 100 \text{ N} $ over a distance of $ 5 \text{ m} $ in $ 2.5 \text{ s} $, what is the average power generated?
Question 4
A crane lifts a $ 500 \text{ kg} $ load vertically at a constant speed of $ 0.5 \text{ m/s} $. What is the power exerted by the crane? (Assume $ g = 9.8 \text{ m/s}^2 $)
Question 5
Which of the following statements about power is true?