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.)

72

Step-by-step explanation:

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

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

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

In conclusion the acceleration is , without units just 72.

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