Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN: 9781305116399
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 2, Problem 2.77AP
A motorist drives along a straight road at a constant speed of 15.0 m/s. Just as she passes a parked motorcycle police officer, the officer starts to accelerate at 2.00 m/s2 to overtake her. Assuming that the officer maintains this acceleration, (a) determine the time interval required for the police officer to reach the motorist. Find (b) the speed and (c) the total displacement of the officer as he overtakes the motorist.
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On a one lane road, a person driving a car at v1 = 76 mi/h suddenly notices a truck d = 1.9 mi in front of him. That truck is moving in the same direction at v2 = 45 mi/h. In order to avoid a collision, the person has to reduce the speed of his car to v2 during time interval Δt. The smallest acceleration required for the car to avoid a collision is a. During this problem, assume the direction of motion of the car is the positive direction. Refer to the figure below.
a)Enter an expression, in terms of defined quantities, for the distance, Δx2, traveled by the truck during the time interval Δt.
b)Enter an expression for the distance, Δx1, traveled by the car in terms of v1, v2 and a.
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d)Enter an expression for Δx1 in terms of Δx2 and d when the driver just barely avoids collision.
e)Enter an expression for Δx1 in terms of v1, v2, and Δt.
f)Enter an expression for Δt in terms of d, v1, and v2.
g)…
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Chapter 2 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
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