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.

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter2: Motion

Section: Chapter Questions

Problem 9E: An airplane flying directly eastward at a constant speed travels 300 km in 2.0 h. (a) What is the...

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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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