The table shows the stopping distances for a car at different speeds. Speed Stopping distance
20 mph 15 metres
40 mph 45 metres
60 mph
90 metres
a) Look at the square grid below.
It shows the bar for the stopping distance at 20 mph.
Use the same scale to draw the bar for the stopping distance at 40 mph.
20 mph
40 mph
Stopping
distance
b) The bar for the stopping distance at 60 mph will not fit on the grid.
How many squares long should the bar be?