SOLUTION: A car is going at 20.0 m/s. At the same time that it reaches the beginning of a kilometre-long track, it starts accelerating at 5.00m/sē. How long does it take the car to go around

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Question 1105127: A car is going at 20.0 m/s. At the same time that it reaches the beginning of a kilometre-long track, it starts accelerating at 5.00m/sē. How long does it take the car to go around the track once?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A car is going at 20.0 m/s. At the same time that it reaches the beginning of a kilometre-long track, it starts accelerating at 5.00m/sē. How long does it take the car to go around the track once?
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s+=+at%5E2%2F2+%2B+v%5B0%5Dt
1000 = 2.5t^2 + 20t
t^2 + 8t - 400 = 0
t =~ 16.396 seconds