# Help with velocity

## Homework Statement

Larry leaves home at 11:08 and runs at a constant speed to the lamppost. He reaches the lamppost at 11:17, immediately turns, and runs to the tree. Larry arrives at the tree at 11:22. What is Larry's average velocity during his trip from home to the lamppost, if the lamppost is 371.0 m west of home, and the tree is 630.0 m east of home?

v=d/t

## The Attempt at a Solution

This is what i've done:
d=371 m
t = (9*60) = 540 s

v=371/540
=0.687 m/s

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CompuChip
Homework Helper
I am wondering what you are doing wrong as well. Why do you think it is wrong? Because I think you did the calculation correctly.

dx
Homework Helper
Gold Member
Is the positive direction of the x-axis pointing east or west? If it's pointing east then you're missing a minus sign.

I strongly suspect that the question meant to ask for the average
velocity from home to the tree.

Thanks and I was missing the a negative