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If a cat with a mass of 4.4 kilograms can run at a velocity of 12.5m/s how much kinetic energy does the cat produce

physics
Dec 14, 2015

#2
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If a cat with a mass of 4.4 kilograms can run at a velocity of 12.5m/s how much kinetic energy does the cat produce

$$\begin{array}{rcll} E_k &=& \frac12 m v^2 \qquad m = 4.4\ \mathrm{kg} \qquad v = 12.5\ \frac{\mathrm{m}}{\mathrm{s}} \\\\ E_k &=& \frac12 \cdot 4.4\ \mathrm{kg} \cdot \left(12.5\ \frac{\mathrm{m}}{\mathrm{s}} \right)^2 \\ E_k &=& 2.2 \cdot 156.25\ \frac{\mathrm{kg}\cdot \mathrm{m}^2}{\mathrm{s}^2} \\ E_k &=&343.75\ \frac{\mathrm{kg}\cdot \mathrm{m}^2}{\mathrm{s}^2} \\ E_k &=&343.75\ \mathrm{J} \end{array}$$

Dec 15, 2015

#1
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I didn't know yo could find kinetic energy. That is so cool.😀

Dec 14, 2015
#2
+24949
+10
$$\begin{array}{rcll} E_k &=& \frac12 m v^2 \qquad m = 4.4\ \mathrm{kg} \qquad v = 12.5\ \frac{\mathrm{m}}{\mathrm{s}} \\\\ E_k &=& \frac12 \cdot 4.4\ \mathrm{kg} \cdot \left(12.5\ \frac{\mathrm{m}}{\mathrm{s}} \right)^2 \\ E_k &=& 2.2 \cdot 156.25\ \frac{\mathrm{kg}\cdot \mathrm{m}^2}{\mathrm{s}^2} \\ E_k &=&343.75\ \frac{\mathrm{kg}\cdot \mathrm{m}^2}{\mathrm{s}^2} \\ E_k &=&343.75\ \mathrm{J} \end{array}$$