We just started vectors today and introduced the I and J axes. He insists we use I and J instead of X and Y, thats okay.(adsbygoogle = window.adsbygoogle || []).push({});

So basically here is the question asked:

A person riding a bike has a velocity v=32m/s I + 12m/s J. Determine the magnitude of hte velocity and hte bikes direction. Determine the total distance traveled by the person on the bike after 120 seconds.

SO my first step I would think is to draw quadrant 1 of an XY plane. Is the direction northeast? I would imagine this is the case because there is no mention of any negative velocities, so quadrant 1 is + in both axes.

TO determine the magnitude of velocities...

Do I simply draw a right triangle, with point (0,0) as the vertex with a 90 degree? Move up 32 in the I, and 12 in hte J?

Then use A^2+B^2=C^2 to find the hypotenuse? The hypotenuse being the magnitude?

I THINK that part I have right. BUt it is the total distance that stumps me, can somebody give some insight?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Help a highschooler with physics homework?

**Physics Forums | Science Articles, Homework Help, Discussion**