It is zero.. All your differentiations are correct.
I'm reviewing for my calculus exam on Tuesday and am a bit stuck on this problem. I must be differentiating something wrong.
The position vector of a particle is r(t). Find the requested vector.
Find the velocity vector at time (t)=0,
Derivative of i component:
Derivative of j component:
Derivative of j component:
- +
Shouldn't v(0)=0 ?
What am I doing wrong?