Which 10

Which will have greater momentum between a ten-wheeler truck weighing 7,000 kg and a bus that weighs 5,000kg if the bus is moving at 15 m/s while the truck is moving at 10 m/s?

Correct answer:

x = B

Step-by-step explanation:

$$\begin{gathered} m_1=7000\text{kg} \\ {m}_2=5000\text{kg} \\ {v}_2=15\text{m/s} \\ {v}_1=10\text{m/s} \\ {E}_1=\frac{1}{2}\cdot m_1\cdot v_1^2=\frac{1}{2}\cdot 7000\cdot 10^2=350000\text{J} \\ {E}_2=\frac{1}{2}\cdot m_2\cdot v_2^2=\frac{1}{2}\cdot 5000\cdot 15^2=562500\text{J} \\ {E}_2>E_1 \\ x=B \end{gathered}$$

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