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An electric car is travelling along a straight, horizontal test track.

The horizontal forces acting on the car are shown below:

  • Driving force from the motor = 3200 N3200\text{ N}3200 N (forward)
  • Air resistance = 1800 N1800\text{ N}1800 N (backward)
  • Friction between the tyres and road = 600 N600\text{ N}600 N (backward)

An electric car moving to the right on a flat road. The forward driving force is represented by an arrow pointing to the right, labeled 'Driving force = 3200 N'. The two resistive forces pointing to the left are represented by arrows pointing to the left, labeled 'Air resistance = 1800 N' and 'Friction = 600 N'.

a.

Determine the magnitude of the resultant horizontal force on the car.

[2]
b.

Describe the horizontal motion of the car.

[2]
c.

Air resistance and friction are contact forces. Give one other example of a contact force.

[1]

Forces and their interactions Questions

Practise AQA GCSE Physics Forces and their interactions with exam-style questions for Foundation and Higher tier. 13 questions covering Scalar and vector quantities, Contact and non-contact forces, Gravity, and Resultant forces, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Forces and their interactions Questions

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  3. /Forces and their interactions