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(a) Calculate the distance travelled by the bus in the first 40 s.
distance =
.m
(b) The distance travelled between 40 s and 80 s is 315 m. Calculate the average speed of the bus during the whole 80 s.
average speed =
.m/s
(c) Describe the motion of the bus
(i) between 40 s and 70 s,
(ii) between 70 s and 80 s.

10
9-
speed
m/s
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7.
6-
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2-
1.
10
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time/s

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