A distance-time graph is like a diary of a kombi's trip: the steeper the line, the faster it's travelling. A flat section means it has stopped (passengers boarding, perhaps).
Speed = gradient of the distance-time graph = distance ÷ time.
Example: A kombi covers 60 km in 1.5 hours on a straight section of the graph. Speed = 60 ÷ 1.5 = 40 km/h.
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A car travels 90 km in 1.5 hours at constant speed. Find its speed.A cyclist's graph shows 20 km covered …
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