CAIE A-Level Physics AS 2.1.4 Velocity Using the Gradient of a Displacement Time Graph Questions

Determine velocity from the gradient of a displacement–time graph, including interpretation of positive, negative and zero gradients.

Exam points

Determine velocity from the gradient of a displacement–time graph, including interpretation of positive, negative and zero gradients.

[Maximum number: 2]

A toy train moves along a straight section of track. Fig. 1.1 shows the variation with time t of the distance d moved by the train.

Fig. 1.1

Determine the speed of the train at time $t=2.0 \mathrm{~s}$ .

\text{speed = ................................................ } \mathrm{m\,s}^{-1}\quad \text{[2]}

speed $=(\Delta) d /(\Delta) t$ or gradient
$\begin{aligned} =\text { e.g. }(0.56-0.20) / 1.5 =0.24 \mathrm{~m} \mathrm{~s}^{-1} \end{aligned}$

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