Concept explainers
The greatest magnitude of acceleration among all the cars.
Answer to Problem 1Q
The magnitude of the acceleration of car C is greatest among all the cars.
Explanation of Solution
Given:
The time for all the cars is,
The initial velocity for car A is,
The initial velocity for car B is,
The initial velocity for car C is,
The final velocity for car A is,
The final velocity for car B is,
The final velocity for car C is,
Formula used:
The expression for the acceleration of the car is given by,
Here,
Calculation:
The magnitude for the acceleration of car A is calculated as,
The magnitude for the acceleration of car B is calculated as,
The magnitude for the acceleration of the car C is calculated as,
Conclusion:
Therefore, the magnitude of the acceleration of car C is greatest among all the cars.
Want to see more full solutions like this?
Chapter 2 Solutions
Physics Fundamentals
- The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of 5.60 m/s2 for 4.20 s, making straight skid marks 62.4 m long, all the way to the tree. With what speed does the car then strike the tree?arrow_forwardTo pass a physical education class at a university, a student must run 1.0 mi in 12 min. After running for 10 min, she still has 500 yd to go. If her maximum acceleration is 0.15 m/s2, can she make it? If the answer is no, determine what acceleration she would need to be successful.arrow_forwardA car travels on a straight, level road. (a) Starting from rest, the car is going 44 ft/s (30 mi/h) at the end of 5.0 s. What is the cars average acceleration in ft/s2? (b) In 4.0 more seconds, the car is going 88 ft/s (60 mi/h). What is the cars average acceleration for this time period? (c) The car then slows to 66 ft/s (45 mi/h) in 3.0 s. What is the average acceleration for this time period? (d) What is the overall average acceleration for the total time? (Note these convenient British unit conversions: 60 mi/h = 88 ft/s, 45 mi/h = 66 ft/s, and 30 mi/h = 44 ft/s.)arrow_forward
- A cop car, at a constant speed of 110 km/h, is overtaken by a race car. Precisely 1.2 s after the race car passes, the cops step on the accelerator. The cop's car acceleration is 4 m/s2. The cops overtake the race car after 5 s, what was the speeder’s speed?arrow_forwardA high performance sports car goes from 0 to 100 mph (44.7 m/s) in 7.2s. A) What is the car’s average acceleration? B) The same car can come to a complete stop from 34 m/s in about 3.7s. What is its Average Acceleration?arrow_forwardAn object is moving east with a constant speed of 25 m/s for 5 seconds. What is the object's acceleration? O 125 m/s/s O 5 m/s/s O O m/s/s O 25 m/s/s 1 3. 4.arrow_forward
- S P 2 W Copyright © 2003-2023 International Academy of Science. All Rights Reserved. # 3 E D A motorcyclist sees a branch in the road, and hits the brakes, slowing down at -6.42 m/s². If it takes him 2.85 s to stop, what was his starting velocity? (Unit = m/s) C $ R F % 5 T B 6 Y MacBook Pro H & 7 N U J 00 8 1 1 Enter ( 1 K - 9 < O M Me ) O L P : { + (arrow_forwardThe elevators in the Landmark Tower in Yokohama, Japan are among the fastest in the world. They accelerate upward at 3.125 m/s^2 for 4.0 seconds to reach their final speed. if these elevators start from rest, what is their final speedarrow_forwardAn auto accelerates forward from 7.0 m/s at a uniform 0.71 m/s². It travels a distance of 1.033 km while accelerating. (a) How fast is the auto moving just as it is traveled the 1.033 km? (b) How many seconds did it take to travel the 1.033 km?arrow_forward
- b) The same train ordinarily decelerates at a rate of 1 m/s². How long does it take to come to a stop from its top speed? c) In emergencies the train can decelerate more rapidly, coming to rest from 71.7 km/hr in 6.59 s. What is its emergency deceleration?arrow_forwardThe average person passes out at an acceleration of 7g (that is, seven times the gravitational acceleration on Earth). Suppose a car is designed to accelerate at this rate. How much time would be required for the car to accelerate from rest to 60.0 miles per hour? (The car would need rocket boosters!)arrow_forwardA 745i BMW car can brake to a stop in a distance of stopping distance of 231 (a) 60 mi/h to rest (b) 80 mi/h to rest (c) 80 mi/h to 60 mi/h 111 ft from a speed of 60.0 mi/h. To brake to a stop from a speed of 80.0 mi/h requires a 2 ft. What is the average braking acceleration for the following intervals? Express the answers in mi/h/s and in m/s. mi/h/s m/s2 mi/h/s m/s2 mi/h/s m/s2arrow_forward
- An Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill