Physics Force & Motion UHS 2023
PMDC Verified Question 28 of 137
If two equal masses are in motion with same individual speeds, we can conclude that
A
Their momentums are same
B
Their momentums can be different from each other
C
Their kinetic energies are different from each other
D
Their total energies are same
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Their momentums can be different from each other
Concept:

Repeated question concept testing the vector nature of momentum.

Solution:

  • Momentum (\( \vec{P} = m\vec{v} \)) requires matching direction, not just speed.


  • Because their travel directions are unknown, their momentum vectors could be entirely different.


Why other options are incorrect:

Their kinetic energies MUST be the same because K.E. is a scalar strictly dictated by mass and speed.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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