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1.5 Forces

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Question 30

An electric car has a maximum speed of 270 km/h. It accelerates from rest with a constant acceleration of 2.5 m/s2.

a.

(i) Define acceleration.

[1]
b.

(ii) Show that the maximum speed of the car is 75 m/s.

[2]
c.

(iii) Calculate the time taken for the car to reach its maximum speed.

[2]
d.

(i) The car has a total mass of 2200 kg. Calculate the horizontal force which causes the acceleration of the car.

[2]
e.

(ii) The car travels into a headwind. The force of this headwind opposes the motion of the car. State and explain the effect of this force on the acceleration of the car, assuming the car's engine continues to provide the same driving force.

[3]
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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