# Physics

posted by Lily

A car enters the freeway with a speed of 6.7
m/s and accelerates uniformly for 3.0 km in
3.8 min.
How fast is the car moving after this time?

1. Scott

the average velocity (Va) during acceleration is __ 3000 m / (3.8 * 60) sec

the final velocity (Vf) is related to the initial velocity (Vi) by:
Vf = (2 * Va) - Vi

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