14 The diagram shows the speed-time graph of a train journey between two stations.
(a) Find the acceleration of the train during the first 40 seconds.
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Answer:
Acceleration is given by : v-u /t
where
v = final velocity
u= Initial velocity and t is time
a) Ij the first 40 sec
U = 0 m/s
V =12 m/s
T = 40 sec
hence ACCELERATION
a= v-u/t
= 12 -0 / 40
= 12 /40
= 3/10 m/s^2
hence acceleration for first 40 sec is 3/10( 0.3) m/s^2
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