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How does the source define linear momentum?
AThe product of a system's mass multiplied by its acceleration
BThe product of a system's mass multiplied by its velocity
CThe ratio of a system's kinetic energy to its speed
DThe sum of a system's mass and its velocity
Answer & Solution
Correct answer: B. The product of a system's mass multiplied by its velocity
1. Linear momentum is defined right at the start of this topic.
2. Linear momentum is defined as the product of a system's mass multiplied by its velocity.
3. Mass multiplied by acceleration is instead the quantity found in Newton's second law as net force, not momentum.
4. Momentum is a product of mass and velocity, not a ratio involving kinetic energy or a sum of the two quantities.
_Source: OpenStax College Physics (CC BY 4.0), Ch 8 "Linear Momentum and Collisions", section 8.1 Linear Momentum and Force_
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