Exam-style question
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A car of mass 1000 kg is moving at a speed of 15 m/s. Calculate its kinetic energy.
Model answer
What a good answer should say
- The kinetic energy of the car is 11250 J.
Explanation
Why this works
This question assesses the ability to calculate kinetic energy using the formula Ek = 0.5 x m x v^2. By substituting the mass (m = 1000 kg) and speed (v = 15 m/s), the calculation demonstrates the application of the kinetic energy concept.
Common mistake
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