A delivery van's stopping distances are measured at two different speeds on a dry road, as shown in the table:
Speed (km h−1)Stopping distance (m)30139077 \begin{array}{c|c} \text{Speed } (\text{km\ h}^{-1}) & \text{Stopping distance } (\text{m}) \\ \hline 30 & 13 \\ 90 & 77 \end{array} Speed (km h−1)3090Stopping distance (m)1377If the van now travels at 60 km h-1 under the same road and driver conditions, which of the following is the most realistic estimate for its stopping distance?
21 m21\text{ m}21 m
38 m38\text{ m}38 m
45 m45\text{ m}45 m
53 m53\text{ m}53 m
27 exam-style questions on OCR GCSE Physics Physics on the move. Each one has a worked solution and a mark scheme showing where the marks go.