A truck is moving forward at a constant speed of 21 m/s. The driver sees a stationary car directly ahead of a distance of 110 m. After a “reaction time” of Δt, he applies the brakes, which gives the truck a backward acceleration of 3 m/s2. What is the maximum allowable Δt to avoid a collision, and what distance will the truck have moved before he applies the brakes? Assuming a reaction time of 1.4 s, how far behind the car will the truck stop, and in how many seconds from the time the driver first saw the car?

A truck is moving forward at a constant speed of 21 m/s. The driver sees a stationary car directly ahead of a distance of 110 m. After a “reaction time” of Δt, he applies the brakes, which gives the truck a backward acceleration of 3 m/s2. What is the maximum allowable Δt to avoid a collision, and what distance will the truck have moved before he applies the brakes? Assuming a reaction time of 1.4 s, how far behind the car will the truck stop, and in how many seconds from the time the driver first saw the car?

Name: A truck is moving forward at a constant speed of 21 m/s. The driver se
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Description: A truck is moving forward at a constant speed of 21 m/s. The driver sees a stationary car directly ahead of a distance of 110 m. After a “reaction time” of Δt, he applies the brakes, which gives the truck a backward acceleration of 3 m/s2. What is th

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

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 11OQ: A skateboarder starts from rest and moves down a hill with constant acceleration in a straight line,...

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