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1.5 Forces

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Question 34
a.

Define acceleration.

[1]
b.

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.

[2]
c.

Calculate the force required to produce an acceleration of 1.2 m/s21.2\text{ m/s}^21.2 m/s2 for this tram.

[2]
d.

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).

[2]
Markscheme

1.5 Forces Questions

  1. IGCSE
  2. /Physics
  3. /1.5 Forces

245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.

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