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22-04-2017
Mathematics

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A truck travels a constant speed of 20m/s . It then decelerates to rest in ten seconds. Find the total distance travelled by the truck in the 20 seconds.

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djjd3114 djjd3114

22-04-2017

In the first 10 seconds it is 200m
In the next 10 seconds (it is decelerating 2m/s every second) it is 100m

200m+100m=300m

300 meters is the answer

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