EBK PHYSICS FOR SCIENTISTS AND ENGINEER
9th Edition
ISBN: 8220100581557
Author: Jewett
Publisher: Cengage Learning US
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Textbook Question
Chapter 2, Problem 2.64AP
In Figure 2.11b, the area under the velocity–time graph and between the vertical axis and time t (vertical dashed line) represents the displacement. As shown, this area consists of a rectangle and a triangle. (a) Compute their areas. (b) Explain how the sum of the two areas compares with the expression on the right-hand side of Equation 2.16.
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1. The speed of a boat in still water is vá. A river flows with a speed of v₁. The boat travels
distance of 19 miles downstream in a river in 1 hour. However, the return journey takes 2
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Hint: Velocity=displacement/time. Displacement can be positive of neagtive depending on the
direction. You will first need to set up the equations by taking into account the resultant
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Set up two equations, one for the downstream journey and one for the upstream journey, in
terms of "v" and "v":
Do v" and "v, add or substract downstream to give the resultant downstream velocity?
Do v" and "v, add or substract upstream togive the resultant upstream velocity? Use the
upstream direction as negative. The resultant upstream velocity should be negative.
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Vr
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The motion of a particle is given by a = 6v1/3, where a is in feet per sec² and v in feet per sec. When t is zero, s = 6 ft, and v = 0. Find the relations between v and t, s and t, v and s. Note: Please include the given, formulas, and complete solution. (Answer in 2 decimal places.)
Chapter 2 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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