motion

An objects position equations:

x=3t^2-6t
y=t^3-3t

x'=6t-6
y'=3t^2-3

When at rest v=0=sqr root of (x'^2 +y'^2)

It does not appear to ever be at rest. Is that correct? The question asks when is the object at rest.

Quote:

---

Originally Posted by Stuck Man

An objects position equations:
x=3t^2-6t, y=t^3-3t
x'=6t-6, y'=3t^2-3
When at rest v=0=sqr root of (x'^2 +y'^2)
It does not appear to ever be at rest. Is that correct? The question asks when is the object at rest.

---

Well it is true that if then is it not?

I found my mistake in the arithmetic.