Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
2
Describing Motion: Kinematics in One Dimension
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2-1 to 2-3: Speed and Velocity
2-4: Acceleration
2-5 and 2-6: Motion at Constant Acceleration
2-7: Freely Falling Objects
2-8: Graphical Analysis

Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 1
Q

If you are driving 95 km/h along a straight road and you look to the side for 2.0 s, how far do you travel during this inattentive period?

A
53 m53\textrm{ m}
Giancoli 7th Edition, Chapter 2, Problem 1 solution video poster
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VIDEO TRANSCRIPT

This is Giancoli Answers with Mr. Dychko. The distance traveled while being distracted looking to the side for two seconds is gonna be the speed that you are traveling times the time that you spend looking to the side and the only quirk with this question is we have to make sure the units work out nicely. So we have two seconds spent looking to the side of the road and we are traveling at 95 kilometers per hour and these time units are not the same so we'll multiply this 2 seconds by 1 hour for every 3600 seconds because with the units on opposite sides of the fraction— these seconds are in the numerator, these seconds are in the denominator— they cancel leaving us with hours. So we have 95 kilometers per hour times 2 seconds times 1 hour for every 3600 seconds and that calculation was here and that gives us 0.0528 kilometers which we'll multiply by 1000 meters per kilometer to turn it into a unit that makes a bit more sense; 53 meters traveled.

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