New Velocity/Distance Question 1/25

  • #1
ilh
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Homework Statement


In reaching her destination, a backpacker walks with an average velocity of 1.44 m/s, due west. This average velocity results, because she hikes for 5.48 km with an average velocity of 3.25 m/s due west, turns around, and hikes with an average velocity of 0.683 m/s due east. How far east did she walk (in kilometers)?


Homework Equations



v1 = 3.25 m/s west
d1= 5480 m
t1= 1686

v2 = 0.638 m/s east
d2 = ?
t2= ?

The Attempt at a Solution



I know I have to plug in my numbers into the formula but I do not know how to derive second time or distance. Please help.

 

Answers and Replies

  • #2
PhanthomJay
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Homework Statement


In reaching her destination, a backpacker walks with an average velocity of 1.44 m/s, due west. This average velocity results, because she hikes for 5.48 km with an average velocity of 3.25 m/s due west, turns around, and hikes with an average velocity of 0.683 m/s due east. How far east did she walk (in kilometers)?


Homework Equations



v1 = 3.25 m/s west
d1= 5480 m
t1= 1686

v2 = 0.638 m/s east
d2 = ?
t2= ?

The Attempt at a Solution



I know I have to plug in my numbers into the formula but I do not know how to derive second time or distance. Please help.
What is the formula for average velocity?
 
  • #3
ilh
2
0
What is the formula for average velocity?
V = D/T
 
  • #4
haruspex
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I do not know how to derive second time or distance.
You successfully found t1 by an equation. You have two more such equations available: one for the return trip and one for the trip as a whole. You have two unknowns.
 
  • #5
PhanthomJay
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V = D/T
But what does D represent when finding average velocity?and T?
 

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