Question

What is a chicken’s rate of acceleration that speeds up from 4 mph (mi/h) to a top speed of 9 mi/h in 0.5 hr?

2.5 mi/h/s

-2.5 mi/h/s

2.5 mi/h2

10 mi/h2

Answer 1

We can use the formula:
acceleration = change in velocity / time
a = (9 - 4) / 0.5
a = 10 mi/h²

Now, we will also check the units. In the numerator was mi/h and the denominator was h so the units become mi/h².