As the driver steps on the gas pedal, a car of mass 1 160 kg accelerates from rest. During the first few seconds of motion, the car’s acceleration increases with time according to the expression a = 1.16t - 0.210t2 + 0.240t3where t is in seconds and a is in m/s2. (a) What is the change in kinetic energy of the car during the interval from t = 0 to t = 2.50 s? (b) What is the minimum average power output of the engine over this time interval? (c) Why is the value in part (b) described as the minimum value?

Given data: The acceleration a of the car increases with time t as, Mass of the car is m= 1160 kg…

Answered: As the driver steps on the gas pedal, a…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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As the driver steps on the gas pedal, a car of mass 1 160 kg accelerates from rest. During the first few seconds of motion, the car’s acceleration increases with time according to the expression
a = 1.16t - 0.210t² + 0.240t³
where t is in seconds and a is in m/s². (a) What is the change in kinetic energy of the car during the interval from t = 0 to t = 2.50 s? (b) What is the minimum average power output of the engine over this time interval? (c) Why is the value in part (b) described as the minimum value?

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