Exam-Style Problem
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June 2011 p41 q1
3475
A car of mass 700 kg is travelling along a straight horizontal road. The resistance to motion is constant and equal to 600 N.
- Find the driving force of the car’s engine at an instant when the acceleration is 2 m s-2.
- Given that the car’s speed at this instant is 15 m s-1, find the rate at which the car’s engine is working.
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