The driver of a 10-wheeler truck slams on the brakes when he witnessed a huge coconut tree blocking the road. This truck slows down uniformly with an acceleration of -5.60m/s^2 for 4.20s, making skid marks 62.4m long that end at the tree. With what speed does the truck then strike the tree?

The driver of a 10-wheeler truck slams on the brakes when he witnessed a huge coconut tree blocking the road. This truck slows down uniformly with an acceleration of -5.60m/s^2 for 4.20s, making skid marks 62.4m long that end at the tree. With what speed does the truck then strike the tree?

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 23P: The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows...

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Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

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