Question

The velocity-time graph shows the motion of a truck. Find (i) its velocity , (ii) its acceleration and (iii) the distance covered by the cyclist in 15 seconds

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Answer 1

(iii) 300m

Step-by-step explanation:

(i) The velocity of the cyclist is constant with time, the rate of the change of the velocity with the time is zero. So the acceleration of the object will be zero.

(ii) According to the graph we observe that the cyclist is moving with the same velocity all the time, therefore, the velocity of the cyclist is
`20m/s^(-1)`

(iii) Apply the formula: (speed = velocity x time)

s = vt

s =
`20m/s^(-1)` x 15s

s = 300m

Hope this helps :)