a) 2.0 m/s2
Acceleration = change in velocity / time,
a = (1.5 – 0)/ 0.75 = 2 m/s2
b) 2.25 m
Total distance = area under the line =
(1/2 ×0.75 ×1.5) + (1/2 ×2.25 ×1.5) = 2.25 m
Note:the tractor showed constant acceleration from A to B and then constant deceleration from B to C.
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