Principles of Physics: A Calculus-Based Text
5th Edition
ISBN: 9781133104261
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 2, Problem 41P
Colonel John P. Stapp, USAF, participated in studying whether a jet pilot could survive emergency ejection. On March 19, 1954, he rode a rocket-propelled sled that moved down a track at a speed of 632 mi/h. He and the sled were safely brought to rest in 1.40 s (Fig. P2.41). Determine (a) the negative acceleration he experienced and (b) the distance he traveled during this negative acceleration.
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A Nozomi Shinkansen train at rest travels from Osaka to Tokyo along a high-speed railroad track which makes a total of 3-hour journey, non-stop. From Osaka station, its distance x is given as a function of time t by the equation x(t)=−αt2+βt3 where α=4.35mihr2 and β=13mihr3. Determine:a) The average and instantaneous velocity of the train as it reaches Tokyo in mph.b) The average and instantaneous acceleration of the train as it reaches Tokyo in mihr2.
Colonel John P. Stapp, USAF, participated in studying whether a jet pilot could survive emergency ejection. On March 19, 1954, he rode a rocket-propelled sled that moved down a track at a speed of 632 mi/h (see figure below). He and the sled were safely brought to rest in 1.40 s.
(a) Determine in SI units the negative acceleration he experienced. (m/s2)
(b) Determine in SI units the distance he traveled during this negative acceleration. (m)
On a one lane road, a person driving a car at v1 = 58 mi/h suddenly notices a truck 1.1 mi in front of him. That truck is moving in the same direction at v2 = 35 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 magnitude of 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.
1. Use the expressions you entered in parts (c) and (f) and enter an expression for a in terms of d, v1, and v2.
a = ( v2 - v1 )/Δt
Δt = ( 2 ) ( d )/( v1 - v2 )
2. Calculate the value of a in meters per second squared.
Chapter 2 Solutions
Principles of Physics: A Calculus-Based Text
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