SOLUTION: A car travelling down a road begins accelerating with a constant acceleration of 1.6 m/s2 in the direction of motion. After travelling 167 m at this acceleration, its speed is 76.0

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Question 793410: A car travelling down a road begins accelerating with a constant acceleration of 1.6 m/s2 in the direction of motion. After travelling 167 m at this acceleration, its speed is 76.0 m/s. Determine the speed of the car when it began accelerating.

Answer by htmentor(1343) About Me  (Show Source):
You can put this solution on YOUR website!
The relevant formula to use for constant acceleration when you know the initial or final velocity and the distance traveled is
v2^2 = v1^2 + 2ad
Using this formula, substituting v2 = 76 a=1.6 and d=167, we get:
v1 = sqrt(76^2-2*1.6*167)
This gives v1 = 72.4 m/s