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) (Show Source): You can put this solution on YOUR website!
14 km/h
Answer by Theo(13342) (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.
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