The average velocity of a car over a certain time interval is 37 mi/h.If the velocity of the car was 65 mi/h at the end of this interval,what was its initial velocity? Assume that acceleration was constant.
A)9 mi/h
B)13 mi/h
C)4.0 mi/h
D)57 mi/h

Question

Quizplus · Accepted Answer

Let's call the initial velocity "v0". We know the final velocity is 65 mi/h and the average velocity is 37 mi/h. We can use the formula for average velocity:

average velocity = (final velocity + initial velocity)/2

Plugging in the given numbers:

37 mi/h = (65 mi/h + v0)/2

Solving for v0:

v0 = 9 mi/h

Therefore, the initial velocity of the car was 9 mi/h.

The Average Velocity of a Car Over a Certain Time