# Confused with this negative average velocity

1. Jul 1, 2013

### Suarden

1. The problem statement, all variables and given/known data
If you drive an average velocity of -72.8 Km/h for 55 minutes to a position that is 28.5 KM north of Jollitown, in what position did you start your drive?

Last edited by a moderator: Jul 1, 2013
2. Jul 1, 2013

### phinds

What do you think "negative" means in this context?

3. Jul 1, 2013

### Suarden

I think it means that it have a negative velocity, and it opposes the direction at the origin, but I am still confused, I do not know where to start. If you can Provide me the answer I can figure it out how to solve it. Hahays, please help me.

4. Jul 1, 2013

### phinds

Draw a graph. Show the end point on the graph. Where do you have to start to end up there if you are going in a "negative" direction relative to the origin? Do you start North, South, East, or West of the end point?

5. Jul 1, 2013

### Suarden

Is this Right? The starting position starts in (North) but it travels downward, that's why it is negative, so for the initial position of the car I need to compute the distance travelled in 55 minutes and then add it to the 28.5KM? If I only base my answer on the Y axis, does my negative indicates that I travel downward (backward) so the car travels going through the Origin Point? which is the intersection of X and Y axis in the cartesian plane?

6. Jul 1, 2013

### phinds

Do not erase original posts on this forum !!!!

7. Jul 1, 2013

### Redbelly98

Staff Emeritus
fyi, the original post has been restored.