Chapter 2.1, Problem 43E

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8th Edition

James Stewart

ISBN: 9781285740621

Textbook Problem

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A particle moves along a straight line with equation of motion
*s* is measured in meters and *t* in seconds. Find the velocity and the speed when

To determine

**To find:**

The velocity and speed at

Explanation

**Definition:**

Velocity is the rate of change of displacement of a particle.

Speed is magnitude of velocity.

**Formula:**

where

**Given:**

**Calculation:**

Velocity at t = 4 is,

Using the identity

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Sect-2.1 P-1ESect-2.1 P-2ESect-2.1 P-3ESect-2.1 P-4ESect-2.1 P-5ESect-2.1 P-6ESect-2.1 P-7ESect-2.1 P-8ESect-2.1 P-9ESect-2.1 P-10E

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