A circular track has a radius of 120 m. An athlete runs half-way round the track and stops. (i) How much distance has she covered? (ii) Calculate her displacement. She takes 54 s to cover the distance. (iii) Calculate her average speed, using the formula average speed = distance covered time taken (iv) Calculate her average velocity using the formula average velocity = displacement time taken

A circular track has a radius of 120 m. An athlete runs half-way round the track and stops. (i) How much distance has she covered? (ii) Calculate her displacement. She takes 54 s to cover the distance. (iii) Calculate her average speed, using the formula average speed = distance covered time taken (iv) Calculate her average velocity using the formula average velocity = displacement time taken

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 9CQ: If you divide the total distance traveled on a car trip (as determined by the odometer) by the...

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Concept explainers

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –

Question

A circular track has a radius of 120 m. An athlete runs half-way round the track and stops.
(i) How much distance has she covered?
(ii) Calculate her displacement.
She takes 54 s to cover the distance.
(iii) Calculate her average speed, using the formula
average speed = distance covered
time taken
(iv) Calculate her average velocity using the formula
average velocity = displacement
time taken

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Step 2: Calculate distance covered by the athlete

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Step 3: Calculate displacement of the athlete

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Step 4: Calculate average speed of the athlete

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Step 5: Calculate average velocity of the athlete

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