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A car's velocity changes at a rate of 36 miles per hour in 0.5 hour.

What is its acceleration, in miles/hour2?

(Note: Do not specify units in your answer. Your answer must be only a number.)

User Functino
by
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1 Answer

4 votes

Answer:

72

Explanation:

In order to find the acceleration we need first to defined it, so:

acceleration=((final velocity)-(initial velocity))/time interval


a=(vf-vi)/dt

But (vf-vi) actually represents the velocity change, so (vf-vi)/dt represents the velocity change rate. This means that in our case:


a=(36miles/hour)/(0.5hours)


a=72miles/hour^2

In conclusion the acceleration is
a=72miles/hour^2, without units just 72.

User Macarse
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