Question

Greg is in a bike race. At mile marker four (out of ten), his speed was measured at 13.5 mph.

Which best describes the measured number?

- It is the average speed of the bike rider.
- It is the instantaneous speed of the bike rider.
- It is the instantaneous velocity of the bike rider.
- It is the average velocity of the bike rider.

Answer 1

it is the instantaneous speed of the bike rider.

Explanation:

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Answer 2

• B. It is the instantaneous speed of the bike rider.

Explanation:

According to the question, the speed measured at exact position is 13.5 mph.

This is a speed and not the velocity since velocity considers the direction as well.

This is not average since the average speed is calculated based on minimum of two values at different points.

So the correct choice is B.