Stars and Galaxies
Stars and Galaxies
9th Edition
ISBN: 9781305120785
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 5, Problem 10RQ
To determine

The difference between speed and the velocity.

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“Velocity” and “speed” are used interchangeably in everyday language, but they have distinct definitions in physics. Why?
Without turning around, a dog walks along a long straight path for 4.0 m at 3.0 m/s and then for 2.0 s at 6.0 m/s. What was the average speed of the dog?
The difference between speed and velocity is ___. Speed is measurable Speed can change over time Velocity is speed in a given direction Speed accurately describes an object’s motion   A rate of change in velocity is called ____. Speed Inertia Motion Acceleration   When a car has constant speed and then starts to slow down, ___. Only its speed changes Only its acceleration changes Its speed and acceleration change Neither its velocity nor acceleration change   A train accelerates from 100 m/s west to 170 m/s      west in 10 seconds. What is the acceleration of the       bus?                               a = Vf – Vi                                                     time  7 m/s2 7 m/s2 80 m/s2 280 m/s2    A biker rides 80 meters in 12 seconds.  His average speed is ___. (s=d/t) 15 m/s 67 m/s 58 m/s 92 m/s   According to Newton’s 3rdLaw of Motion, for every action, there is ___. Work being done An equal and opposite reaction An unbalanced force on the reaction. An equal…
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Position/Velocity/Acceleration Part 1: Definitions; Author: Professor Dave explains;https://www.youtube.com/watch?v=4dCrkp8qgLU;License: Standard YouTube License, CC-BY