Define acceleration.
An electric tram has a total mass of 45 000 kg45\,000\text{ kg}45000 kg. The tram accelerates at 1.2 m/s21.2\text{ m/s}^21.2 m/s2.
Calculate the time taken for the tram to increase its speed from 8.0 m/s8.0\text{ m/s}8.0 m/s to 20.0 m/s20.0\text{ m/s}20.0 m/s.
Calculate the force required to produce an acceleration of 1.2 m/s21.2\text{ m/s}^21.2 m/s2 for this tram.
The tram is powered by electric motors. Explain why the force exerted by the motors on the tram must be greater than the value calculated in (ii).
183 exam-style questions on CIE IGCSE Physics 1.5.1a Forces, resultant force and motion. Each one has a worked solution and a mark scheme showing where the marks go.