4.1 - Introduction to Work, Energy and Power
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Practice Questions
Test your understanding with targeted questions
What is the formula for work?
💡 Hint: Think about the definition of work involving force and movement.
What unit is used to measure energy?
💡 Hint: Recall the units for work and energy are the same.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for calculating work?
💡 Hint: Remember to include the angle in the work formula.
True or False: Energy can be created and destroyed.
💡 Hint: Recall the conservation principles we discussed.
1 more question available
Challenge Problems
Push your limits with advanced challenges
An electric motor lifts a 100 kg weight to a height of 10 meters in 5 seconds. Calculate the work done and the power output of the motor.
💡 Hint: Use the weight of the object to find work done and then apply the power formula.
A car travels 60 km at a speed of 15 m/s. Calculate the work done if the force required to maintain that speed is 400 N.
💡 Hint: Remember to calculate time using distance and speed.
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Reference links
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