An astronaut floating in the International Space Station moves at 0.40 m/s to the right. After 5.0 sec have passed they are now moving at 1.30 m/s to the left. What was their acceleration during this time, stating both the magnitude and direction?

An astronaut floating in the International Space Station moves at 0.40 m/s to the right. After 5.0 sec have passed they are now moving at 1.30 m/s to the left. What was their acceleration during this time, stating both the magnitude and direction?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter39: Relativity

Section: Chapter Questions

Problem 3PQ

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Question

An astronaut floating in the International Space Station moves at 0.40 m/s to the right. After 5.0
sec have passed they are now moving at 1.30 m/s to the left. What was their acceleration during
this time, stating both the magnitude and direction?

Expert Solution

Step 1

Given, initial velocity of the astronaut u = 0.40 m/s ( right)

We will consider right as positive

So, u = 0.40 m/s

Final velocity v = 1.30 m/s (left)

Considering left as negative

So, v = -1.30 m/s

To find acceleration we will use the formula

$v = u + a t$ .......1

Where , a = acceleration

t = time = 5.0 sec

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