Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN: 9781305116399
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Textbook Question
Chapter 4, Problem 4.3CQ
If you know the position vectors of a particle at two points along its path and also know the time interval during which it moved from one point to the other, can you determine the particle’s instantaneous velocity? Its average velocity? Explain.
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Q1: (a) If you know the position vectors of a particle at two points along its path and also
know the time interval during which it moved from one point to the other, can you
determine the particle's instantaneous velocity? Its average velocity? Explain.
SITUATION 1. The position coordinate of a particle which is confined to move along a straight line is given by, s=
2t³ 24t+ 6 where s is measured in meters from a convenient origin and t is in seconds.
a) Determine the time required for the particle to reach a velocity of 72m/s from its initial condition at t = 0.
b) Determine the acceleration of the particle when v = 30m/s?
c) Determine the net displacement of the particle during the interval from t = 1sec to t = 4sec.
1.A car moves counterclockwise from the x axis with its position vector 29m at 95 degree and is moving with a velocity of 4.5m/s at 40 degree. If its acceleration is 1.9m/s2 at 200 degree, find (a) its velocity(b) acceleration after 5s.,(c) plot a graph of the velocity(Y) vs time (X)and position vector(Y) vs time(X) in this case. Use t = 0,2,4,8,12,25,50s
Hint: From position ad velocity vectors, obtain the resultant position and velocity vector from X and Y components and tabulate them below and plot the graphs using those values.
Time(s)à
0
2
4
8
12
25
50
Position(m)à
Velocity(m/s)à
Chapter 4 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
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