SOLUTION: a cyclist travels 7km northward in a half an hour. What is her velocity in km/hr?

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Question 335116: a cyclist travels 7km northward in a half an hour. What is her velocity in km/hr?
Found 2 solutions by rfer, Theo:
Answer by rfer(16322) About Me  (Show Source):
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
rate * time = distance

time = distance / rate

rate = distance / time

In your problem:

The distance is 7 kilometers.

The time is half an hour.

Use the formula rate = distance / time.

You get:

7 kilometers / .5 hours = 14 kilometers / hour.

That's 14 kilometers per hour.

That's the magnitude portion of the velocity, otherwise known as speed, or rate of travel.

The fact that you are going in a northward direction helps to define the velocity.

Velocity contains speed and direction.

The velocity is 14 kilometers per hour in a northward direction.