College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Concept explainers

Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, fo…
Topic Video
Question

(a) and (b) already answered.

(a):

300 is position of car at t=0 

-120 shows velocity

20 shows acceleration

(b): v = -120 + 40t

 

Need help answering (c), (d), (e).

 

6. A car is headed into town along a straight highway (x-0m is the center of town), and its position is given by the following equation. x(t)= 300 – 120t + 2012 a) What do the 300, -120 and 20 mean in the above equation? b) Using the derivative method find the equation for the velocity of the particle. c) Using the derivative method find the equation for the acceleration of the particle. d) At what time will the car come to rest? e) Has the car reached the center of town at that time? If not how far away is it?
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Transcribed Image Text:6. A car is headed into town along a straight highway (x-0m is the center of town), and its position is given by the following equation. x(t)= 300 – 120t + 2012 a) What do the 300, -120 and 20 mean in the above equation? b) Using the derivative method find the equation for the velocity of the particle. c) Using the derivative method find the equation for the acceleration of the particle. d) At what time will the car come to rest? e) Has the car reached the center of town at that time? If not how far away is it?
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