June 2024 Paper 2 Q13

AQACurrent spec1 markTime-Series Graphs

13 A car starting from rest moves forward in a straight line.

The motion of the car is modelled by the velocity–time graph below:

Velocity–time graph, v (m s⁻¹) against t (s): a straight line rising from the origin, then a horizontal line

One of the following assumptions about the motion of the car is implied by the graph.

Identify this assumption. [1 mark]

Tick (✓) one box.

  • The car never accelerates.
  • The acceleration of the car is always positive.
  • The acceleration of the car can change instantaneously.
  • The acceleration of the car is never constant.