- #1
Taniaz
- 364
- 1
Homework Statement
The position vector of a particle at time t is R=(1-t^2)i+(3t-5t^2)j. Find the time at which P is moving (a) towards the origin (b) away from the origin.[/B]
Homework Equations
The Attempt at a Solution
I've thought about this for a while but I've come to the conclusion that I'm not really sure what they're asking for when they say towards and away from the origin. I know that the acceleration is constant because if you keep deriving you get a = -2i - 10j
[/B]