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Mechanics - Momentum MCQs

Practice important Mechanics - Momentum MCQs with answers, explanations, theory links, and exam-focused preparation.

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Mechanics - Momentum

Mechanics - Momentum MCQs With Answers

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CSS - PMS - CCE - PCS - General Science Mechanics - Momentum
Why do airbags reduce injury risk in a collision?
A. They increase stopping time, reducing average force for a given momentum change
B. They increase acceleration sharply
C. They increase momentum
D. They eliminate mass
Correct Answer: A
Spreading the same momentum change over more time lowers average force.
CSS - PMS - CCE - PCS - General Science Mechanics - Momentum
What is impulse equal to?
A. Velocity only
B. Mass only
C. Change in momentum
D. Power
Correct Answer: C
Impulse J = FΔt equals Δp.
CSS - PMS - CCE - PCS - General Science Mechanics - Momentum
What principle applies to total momentum in an isolated system?
A. It always increases
B. It equals temperature
C. It is conserved
D. It always becomes zero
Correct Answer: C
With no net external impulse, total momentum remains constant.
CSS - PMS - CCE - PCS - General Science Mechanics - Momentum
Which equation defines momentum?
A. p = F/A
B. p = V/I
C. p = m/v
D. p = mv
Correct Answer: D
Linear momentum is mass times velocity.
CSS - PMS - CCE - PCS - General Science Mechanics - Momentum
What is the SI unit of momentum?
A. kg·m/s
B. kg/m³
C. N/m²
D. J/s
Correct Answer: A
Momentum combines mass in kilograms and velocity in meters per second.
CSS - PMS - CCE - PCS - General Science Mechanics - Momentum
What is linear momentum?
A. Mass divided by velocity
B. Product of mass and velocity
C. Energy per unit time
D. Force divided by area
Correct Answer: B
Momentum p = mv.
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