CAIE IGCSE Physics: Acceleration from Speed–Time Gradient Question Bank

Practise finding acceleration from speed-time graphs by using gradients, tangents and sensible graph readings.

Exam points

calculate acceleration from the gradient of a straight section of a speed-time graph
draw a tangent to a curve and use its gradient for acceleration at an instant
compare graph slopes to find greatest acceleration or deceleration

[Maximum number: 2]

A ship sails in a straight line between two ports.
Fig. 1.1 shows the speed-time graph of the ship for the first 100 minutes of its journey between the two ports.

Fig. 1.1

Calculate the maximum acceleration during the first 100 minutes of the ship's journey.
maximum acceleration =

$0.0069 \mathrm{~m} / \mathrm{s}^{2}$

A2

( acceleration =) gradient of graph or $\Delta v / \Delta t$ in any form OR $\frac{15-7.5}{(60-42) 60}$

C1

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1.2.11—Acceleration from the gradient of a question 1