Question

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Answer 1

i) zero (constant velocity)

ii) 20 m/s

iii) 300 m

Explanation:

i) A body is said to accelerate if it's velocity changes with time. In the given graph, velocity of the cyclist remain constant from point A to B hence attains zero acceleration.

ii) Clearly, velocity of the cyclist is marked uniformly over the red line as 20 m/s for a time interval of 25 seconds.

iii) The cyclist moves with velocity 20 m/s.

Distance covered in 15 seconds = 20 * 15

= 300 m