- #1
thaer_dude
- 19
- 0
Homework Statement
At time t, a comet has the position R = (t2-1)i + 2tj
At t = 2, find the radial and circumferential components of velocity and acceleration
Homework Equations
Vr = V * Ur
Vθ = V * Uθ
ar = a * Ur
aθ = a * Uθ
Ur = cosθ i + sinθ j
Uθ = -sinθ i + cosθ j
The Attempt at a Solution
I've found
v = 2ti + 2j
a= 2i
However, am I allowed to use these equations when the position vector is a function of t and not a function of θ? I'm not very good at polar coordinates so I'm really not sure if I can apply the above equations to my problem right away. Thanks