2.4.3 - Units
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Practice Questions
Test your understanding with targeted questions
What is the formula for work?
💡 Hint: Think about the forces acting on an object and the distance moved.
Define kinetic energy.
💡 Hint: Consider a moving car.
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Interactive Quizzes
Quick quizzes to reinforce your learning
Which of the following describes work?
💡 Hint: Think about what happens during lifting something.
True or False: Power is the total work done over all time.
💡 Hint: Remember the distinction between power and work.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A car accelerates from rest to a speed of 20 m/s in 10 seconds. If its mass is 800 kg, calculate the work done on the car and the power output during this time.
💡 Hint: Use the kinetic energy formula to find work, and divide by time for power.
If a lift raises a 500 kg load 10 meters, calculate how much work is done and how much potential energy is gained.
💡 Hint: Work done against gravity is equal to the potential energy gained.
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Reference links
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