The “reaction time” of the average automobile driver is about 0.7 s. (The reaction time, in this context, is the interval between the perception of a signal to stop and the application of the brakes.) If an automobile can slow down with an acceleration of 3 m/s2, compute the total distance covered in coming to a stop after a signal is observed from an initial velocity of 31 kph. Express your answers in meters.

The “reaction time” of the average automobile driver is about 0.7 s. (The reaction time, in this context, is the interval between the perception of a signal to stop and the application of the brakes.) If an automobile can slow down with an acceleration of 3 m/s2, compute the total distance covered in coming to a stop after a signal is observed from an initial velocity of 31 kph. Express your answers in meters.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter1: Introduction And Vectors

Section: Chapter Questions

Problem 51P: A person going for a walk follows the path shown in Figure P1.51. The total trip consists of four...

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In SI units, speeds are measured in meters per second (m/s). But, depending on where you live, you’re probably mole comfortable of thinking of speeds in terms of either kilometers per hour (km/h) or miles per hour (mi/h). In this problem, you will see that 1 m/s is roughly 4 km/h or 2 mi/h, which is handy to use when developing your physical Intuition. More precisely, show that (a) 1.0m/s=3.6km/h and 1.0m/s=2.2mi/h .
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