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A jogger runs 6 km north, 5 km east, then another 4 km north. Her average speed 8 km/h. How long will it take her to complete her run?10.

Question

A jogger runs 6 km north, 5 km east, then another 4 km north. Her average speed 8 km/h. How long will it take her to complete her run?10.

Using the information from the previous question, what is her average velocity during this time?

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Physics
3 years
2021-07-18T17:47:03+00:00
2021-07-18T17:47:03+00:00 1 Answers
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## Answers ( )

Answer:The time taken to complete her run is 1.9 hr.

Explanation:Speed is a scalar quantity and it is defined as the ratio of distance covered to the time taken to cover that distance. As distance is also a scalar quantity, so the directions given in the problem can be ignored. Thus, the distance covered by the jogger is the sum of kilometers given in problem.

Distance covered = 6+5+4 = 15 km

And the speed is given as 8 km/hr.

So the time taken will be ratio of distance to speed.

So the jogger will take 1.9 hr to complete her run.