Convert m/s to N? Chart Vectors Graphically

[tvshonk]

Homework Statement

I'm charting vectors graphically and am given: 15m/s at 20 degrees + 6m/s at 90 degrees + 8 m/s at -135degrees. Do I have to convert the m/s into Newtons before graphing? Also, which direction would that -135degrees be in if you start at a point? I have no idea what the negative degrees mean and haven't found help online.

Homework Equations

The Attempt at a Solution

Tried laying it out similar to if I had N and graphed it to scale, but my numbers were way off.

 

[NickAtNight]

A) No. existing units are just fine.

 

[NickAtNight]

Have you tried drawing a compass and showing the angles?

If you plot x, y or z, positive is one way, and negative is the other way. So if your angles increase from 0 when you rotate counter-clockwise, what happens to the Angle when you go the other way?

 

[SammyS]

Homework Statement

I'm charting vectors graphically and am given: 15m/s at 20 degrees + 6m/s at 90 degrees + 8 m/s at -135degrees. Do I have to convert the m/s into Newtons before graphing? Also, which direction would that -135degrees be in if you start at a point? I have no idea what the negative degrees mean and haven't found help online.

Homework Equations

The Attempt at a Solution

Tried laying it out similar to if I had N and graphed it to scale, but my numbers were way off.

It makes no sense to convert to Newtons. The to sets of units refer to completely different physical quantities.

Just use a convenient scale factor to lay the velocity vectors out graphically.