A distance of velocity 40m/s brakes to stop over a distance of 100m .
a) what is the aceleration of the train?
b) How much time does it take the train to stop?
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Answer:
time =velocity ÷distance
that is, t =v/d
t =40/100
t =4/10
t =2/5
therefore,
time taken = 2.5 sec.
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