The graph shows a straight section of a vehicle’s speed–time graph. Time $t$ is in seconds and spe

Question

The graph shows a straight section of a vehicle’s speed–time graph. Time $t$ is in seconds and speed $v$ in metres per second.

Jai counts 5 major intervals upwards and 6 major intervals across, and says that the acceleration is $\dfrac56\text{ m/s}^2$. Explain the error and calculate the correct acceleration.[3]

Accepted Answer

The vertical scale was ignored; $\dfrac53\text{ m/s}^2\approx1.67\text{ m/s}^2$.

Checking a gradient calculation

Checking a gradient calculation

Solution:

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