Exam-style question
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A car has a mass of 1200 kg and accelerates at a rate of 3 m/s². What is the force acting on the car?.
- A.3600 N
- B.400 N
- C.1200 N
- D.3000 N
Model answer
What a good answer should say
- 3600 N
Explanation
Why this works
Using F = ma, where F is the force, m is the mass, and a is the acceleration. Substituting the values: F = 1200 kg × 3 m/s² = 3600 N.
Therefore, the force acting on the car is 3600 N.
Common mistake
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