2) (10 pts) Starting from a pillar, you run 200 m east at speed of 5.0 m/s, and then run 280 m west at speed of 4.0 m/s to a post. Calculate (a) Average speed from pillar to post and (b) average velocity from pillar to post.

2) (10 pts) Starting from a pillar, you run 200 m east at speed of 5.0 m/s, and then run 280 m west at speed of 4.0 m/s to a post. Calculate (a) Average speed from pillar to post and (b) average velocity from pillar to post.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter3: Vectors And Two-Dimensional Motion

Section: Chapter Questions

Problem 6WUE: A car is traveling east at 25.0 m/s when it turns north and accelerates to 35.0 m/s, all during a...

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Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

Question

2) (10 pts) Starting from a pillar, you run 200 m east at speed of 5.0 m/s, and then run 280 m west at
speed of 4.0 m/s to a post. Calculate (a) Average speed from pillar to post and (b) average velocity from
pillar to post.

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