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A car drove a total 5km. Accelerated 10seconds then had a constant velocity. Entire trip was 45 seconds. Was was the initial ac...Asked by Tim
A car drove a total 5km. Accelerated 10seconds then had a constant velocity. Entire trip was 45 seconds. Was was the initial acceleration and final velocity?
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Answered by
drwls
During accleration, average speed was Vf/2. Vf is final velocity. Let's work with meters.
(Vf/2)*(10s) + Vf*35s = 5000 m
40 Vf = 5000
Vf = 125 m/s = 450 km/h
Initial acceleration = (125 m/s)/(10 s) = 12.5 m/s^2
The speed seems unrealistically high..
This would be near world record performance
http://www.youtube.com/watch?v=_pz3HE27bQg
(Vf/2)*(10s) + Vf*35s = 5000 m
40 Vf = 5000
Vf = 125 m/s = 450 km/h
Initial acceleration = (125 m/s)/(10 s) = 12.5 m/s^2
The speed seems unrealistically high..
This would be near world record performance
http://www.youtube.com/watch?v=_pz3HE27bQg
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