A point P moves in counter clock wise directi | vedclass

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Question

$S=t^{3}+5$

$\mathrm{V}=\frac{\mathrm{ds}}{\mathrm{dt}}=3 \mathrm{t}^{2}$

$\mathrm{V}_{2}=3(2)^{2}=12 \mathrm{m} / \mathrm{s}$

$a_{c}=\frac{v

Vedclass · Accepted Answer

$14$

Vedclass · Answer

$S=t^{3}+5$

$\mathrm{V}=\frac{\mathrm{ds}}{\mathrm{dt}}=3 \mathrm{t}^{2}$

$\mathrm{V}_{2}=3(2)^{2}=12 \mathrm{m} / \mathrm{s}$

$a_{c}=\frac{v^{2}}{r}=\frac{12 	imes 12}{20}=7.2 \mathrm{m} / \mathrm{s}^{2}$

$a_{t}=\frac{d^{2} s}{d t^{2}}=6 t \quad \Rightarrow \quad\left(a_{t}ight)_{t=2}=12 m / s^{2}$

$a=a_{c}^{2}+a t_{t}^{2}=14 \mathrm{m} / \mathrm{s}^{2}$

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