Given the function vec(r)(t)=4(3t-t^(3))vec(ı)+(12t^(2))vec(ȷ). a. Find the tangential and normal components of the acceleration vector. b. When is the particle 'speeding up'?
Added by Brian N.
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Given: \[ \vec{r}(t) = 4(3t - t^3)\vec{\imath} + (12t^2)\vec{\jmath} \] Differentiate \(\vec{r}(t)\) with respect to \(t\): \[ \vec{v}(t) = \frac{d}{dt} \left[ 4(3t - t^3)\vec{\imath} + (12t^2)\vec{\jmath} \right] \] \[ \vec{v}(t) = 4 \left[ 3 - 3t^2 \right] Show more…
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