9709 P4 - Nov 2003 - Q1
3489
A motorcycle of mass 100 kg is travelling on a horizontal straight road. Its engine is working at a rate of 8 kW. At an instant when the speed of the motorcycle is 25 m s-1 its acceleration is 0.5 m s-2. Find, at this instant,
- the force produced by the engine,
- the resistance to motion of the motorcycle.
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