Question
A body moves with a uniform speed and its distance-time graph is a straight line from (0 s, 0 m) to (15 s, 45 m). If the body continues at the same rate, what distance will it cover at 20 s?
This question was previously asked in
RRB Technician 2026 Grade 3 Question Paper (7-Oct-2026) (Shift 3)
The correct answer is
60 m
Speed = slope of the distance–time graph = \(\frac{45 - 0}{15 - 0}\) = 3 m/s.
At the same uniform speed, distance at 20 s = 3 × 20 = 60 m.
Hence, the answer is 60 m.
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