A velocity-time graph for a car moving with uniform velocity starts at t=0 s and ends at t=10 s, always at 5 m/s. What is the shape of the graph?
A straight horizontal line at 5 m/s
Uniform velocity means the velocity does not change with time.
On a velocity-time graph the velocity stays at 5 m/s from t = 0 s to t = 10 s, so every point on the graph has the same y-value.
A set of points at the same height forms a straight line parallel to the time axis; a rising or falling line would mean acceleration.
Hence, the answer is a straight horizontal line at 5 m/s.
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