I've attached a problem I'm working on, finding displacement is easy in problems like this but I've read through all my notes and whatnot and can't figure out how they're solving the distance traveled by a particle.

Printable View

- Feb 12th 2009, 03:08 PMfattydqDistance traveled by a particle
I've attached a problem I'm working on, finding displacement is easy in problems like this but I've read through all my notes and whatnot and can't figure out how they're solving the distance traveled by a particle.

- Feb 12th 2009, 03:21 PMskeeter
$\displaystyle d = \int_0^3 |3t - 7| \, dt$

the particle starts out in the negative direction, then changes to a positive direction at t = 7/3

$\displaystyle d = -\int_0^{\frac{7}{3}} 3t - 7 \, dt + \int_{\frac{7}{3}}^3 3t - 7 \, dt$ - Feb 12th 2009, 03:27 PMfattydq
- Feb 12th 2009, 03:44 PMskeeter
- Feb 12th 2009, 04:00 PMfattydq
OK for the first I got -8.1666667 and the second I got 2/3 and I added the two and it still says it's wrong. And yes I did negate the first term

- Feb 12th 2009, 04:04 PMfattydq
Nvm I got it, thanks man