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A car entering a highway has an acceleration of 2 m/s per second. The car is traveling north. How long will it take this car to speed up from 4 m/s to 15 m/s? *
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Answer :

smartbrain91
Initial velocity(u)=4m/s
Final velocity (v)=15m/s
Acceleration (a)=2m/s^2
Time(t)=?

Using the formula
V=u+at
a=v-u/a
a=15-4/2
a=11/2
a=5.5

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