Motion in one dimension

[fiziks09]

Homework Statement

A car travels north at 30 m/s for one half hour. It then travels south at 40 m/s for 15
minutes. The total distance the car has traveled and its displacement are?

Homework Equations

The Attempt at a Solution

First of all i converted from m/s to km/h. I took the positive y-axis as the north direction and the negative y-axis as the south direction. I tried to find the distance using d= speed x time for both axis and summing them up but that seems to be so wrong and don't know what else to do...Any help will be very much appreciated thanks..

 

[cyby]

Displacement is not distance traveled. Review the definition of what displacement is...

 

[fiziks09]

Displacement is not distance traveled. Review the definition of what displacement is...

Yeah, i know displacement is change in position... but am trying to find the distance first; because the question asks for both distance and displacement and i think we need to find the distance before we can get the displacement.. isn't that right?

 

[Redbelly98]

The Attempt at a Solution

First of all i converted from m/s to km/h. I took the positive y-axis as the north direction and the negative y-axis as the south direction. I tried to find the distance using d= speed x time for both axis and summing them up but that seems to be so wrong and don't know what else to do...Any help will be very much appreciated thanks..

Please show the work you did, and the answers you got.

 

[jmb88korean]

If he goes 30m/s for 30 minutes, how many seconds are in 30 minutes. Find that and multiply. Then do the same for the next part.