Officer Aptitude Rating (OAR) Formulas Practice Test

Momentum is defined as which product?

M = distance × velocity M = mass ÷ velocity M = velocity × acceleration M = mass × velocity

Correct Answer:

M = mass × velocity

Explanation:

Momentum is defined as the product of an object's mass and its velocity, p = m v. This means how much motion an object has depends on both how heavy it is and how fast it’s moving. It’s a vector, so it points in the same direction as the velocity, and its units are kilograms times meters per second (kg·m/s). For example, a 5 kg object moving at 2 m/s has momentum 10 kg·m/s. The other expressions don’t describe momentum: distance times velocity mixes spatial and motion without capturing inertia; mass divided by velocity changes the quantity’s units and meaning; velocity times acceleration relates to something else (in certain contexts linked to power, not momentum).

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