Physics for Scientists and Engineers with Modern Physics, Technology Update
9th Edition
ISBN: 9781305401969
Author: SERWAY, Raymond A.; Jewett, John W.
Publisher: Cengage Learning
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Chapter 2, Problem 33P
(a)
To determine
The time duration in which the truck is in motion.
(b)
To determine
The average velocity of the truck.
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A taxi traveling along a straight section of road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 28.0 m/s. Then the vehicle travels for 61.0 s at constant speed until the brakes are applied, stopping the vehicle in a uniform manner in an additional 5.00 s.
(A) How long is the taxi in motion (in s)?
Answer: 80 seconds
(B) What is the average velocity of the taxi for the motion described? (Enter the magnitude in m/s.)
___________________m/s
A truck on a straight road starts from rest, accelerating at 2 m/s2 until it reaches a speed of 20.0 m/s. Then the truck travels for 20.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 6.00 s. What is the average speed of the truck for the motion described?
I am having trouble finding the average velocity of a truck in a problem. The problem states, "A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 20.0 m/s. Then the truck travels for 60.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.00 s." I know that the truck is in motion for 75 seconds and I know that average velocity is displacement/time but I havent been able to get the right number.
Chapter 2 Solutions
Physics for Scientists and Engineers with Modern Physics, Technology Update
Ch. 2.1 - Under which of the following conditions is the...Ch. 2.2 - Are officers in the highway patrol more interested...Ch. 2.4 - Make a velocitytime graph for the car in Figure...Ch. 2.4 - If a car is traveling eastward and slowing down,...Ch. 2.5 - Which one of the following statements is true? (a)...Ch. 2.6 - In Figure 2.12, match each vxt graph on the top...Ch. 2.7 - Consider the following choices: (a) increases, (b)...Ch. 2 - Prob. 1OQCh. 2 - A racing car starts from rest at t = 0 and reaches...Ch. 2 - Prob. 3OQ
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