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Get Full Access to University Physics - 13 Edition - Chapter 2 - Problem 16e
Get Full Access to University Physics - 13 Edition - Chapter 2 - Problem 16e

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# An astronaut has left the International Space Station to

ISBN: 9780321675460 31

## Solution for problem 16E Chapter 2

University Physics | 13th Edition

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University Physics | 13th Edition

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Problem 16E

An astronaut has left the International Space Station to test a new space scooter. Her partner measures the following velocity changes, each taking place in a 10-s interval. What are the magnitude, the algebraic sign, and the direction of the average acceleration in each interval? Assume that the positive direction is to the right. (a) At the beginning of the interval, the astronaut is moving toward the right along the x -axis at 15.0 m/s, and at the end of the interval she is moving toward the right at 5.0 m/s. (b) At the beginning she is moving toward the left at 5.0 m/s, and at the end she is moving toward the left at 15.0 m/s. (c) At the beginning she is moving toward the right at 15.0 m/s, and at the end she is moving toward the left at 15.0 m/s.

Step-by-Step Solution:
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Solution 16E The time interval in which she measured her partner’s velocities is 10 s. a) At the beginning of the interval the astronaut is moving toward the right at the speed of 15 m/s. At the end of the interval she was moving toward the right at the speed f 5 m/s. So, the acceleration will be, Vfinal initial515 10 2 acceleration = t = 10 = 10 = 1 m/s . The average acceleration is 1 m/s . the minus sign indicates that she is decelerating and the direction of acceleration is therefore opposite to her velocity. b) At the beginning of the interval the astronaut is moving toward the left at the speed of 5 m/s. At the end of the interval she was moving toward the left at the speed of 15 m/s. So, the acceleration will be, Vfinal initial15(5) 10 2 acceleration = t = 10 = 10 = 1 m/s . The average acceleration is 1 m/s . the minus sign indicates that her direction of motion is towards the negative x-axis. Surely it is accelerating not decelerating. c) At the beginning of the interval the astronaut is moving toward the right at the speed of 15 m/s. At the end of the interval she was moving toward the left at the speed of 15 m/s. So, the acceleration will be, V V acceleration = final init=al15(15)= 30 = 3 m/s .2 t 10 10 2 The average acceleration is 3 m/s . the minus sign indicates that the change in velocity has a direction which is towards the -ve x-axis.

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##### ISBN: 9780321675460

The answer to “An astronaut has left the International Space Station to test a new space scooter. Her partner measures the following velocity changes, each taking place in a 10-s interval. What are the magnitude, the algebraic sign, and the direction of the average acceleration in each interval? Assume that the positive direction is to the right. (a) At the beginning of the interval, the astronaut is moving toward the right along the x -axis at 15.0 m/s, and at the end of the interval she is moving toward the right at 5.0 m/s. (b) At the beginning she is moving toward the left at 5.0 m/s, and at the end she is moving toward the left at 15.0 m/s. (c) At the beginning she is moving toward the right at 15.0 m/s, and at the end she is moving toward the left at 15.0 m/s.” is broken down into a number of easy to follow steps, and 143 words. This full solution covers the following key subjects: Toward, moving, Right, interval, left. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. University Physics was written by and is associated to the ISBN: 9780321675460. The full step-by-step solution to problem: 16E from chapter: 2 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. Since the solution to 16E from 2 chapter was answered, more than 740 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: University Physics, edition: 13.

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