Science
posted by RANDY .
Nathaniel is driving his sports car down a four lane highway at 40m/s. He comes up behind a slow moving dumptruck and decides to pass it in the left hand lane. If Nathaniel can accelerate at 5m/s^2, how long will it take for him to reach the speed of 60m/s?

Just use the definition of acceleration.
Time required
= (Speed change)/(acceleration)
= (20 m/s)/(5 m/s^2) = 4 s
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