QQuestionPhysics
QuestionPhysics
"What is the SI unit for momentum?
A. m/s²
B. kg·m/s
C. N·m
D. N/m²"
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Answer
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Step 1:I'll solve this problem step by step, following the specified LaTeX formatting guidelines:
Step 2:: Recall the definition of momentum
- $$v$$ is velocity
Momentum is defined as the product of an object's mass and its velocity. The formula for momentum is: Where:
Step 3:: Identify the SI base units
- Mass is measured in kilograms (kg) - Velocity is measured in meters per second (m/s)
Step 4:: Combine the units
\mathrm{kg} \cdot \frac{\mathrm{m}}{\mathrm{s}} = \mathrm{kg} \cdot \mathrm{m/s}
When we multiply kg by m/s, we get:
Step 5:: Analyze the given options
D. $$\mathrm{N/m}^{2}$$ (pressure)
B. \mathrm{kg} \cdot \mathrm{m/s} (momentum)
Step 6:: Select the correct unit
The correct SI unit for momentum is $$\mathrm{kg} \cdot \mathrm{m/s}$$.
Final Answer
B. \mathrm{kg} \cdot \mathrm{m/s}
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