Physics Force & Motion DUHS 2023
PMDC Verified Question 45 of 137
Two bodies of mass 10 kg and 40 kg are dropped from the same height at the same time. Value of which to the following remains the same during the motion of the two bodies?
A
Acceleration
B
Kinetic energy
C
Potential energy
D
Power
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Acceleration
Concept:

In the absence of air resistance, all bodies strictly fall at the identical rate of acceleration regardless of their mass.

Solution:

  • Galileo famously demonstrated that acceleration due to gravity (\( g \approx 9.8 \text{ m/s}^2 \)) is entirely independent of an object's mass.


  • Therefore, both the 10kg and 40kg bodies experience the exact same uniform downward acceleration.


Why other options are incorrect:

Kinetic and potential energies strictly depend on mass (\( \frac{1}{2}mv^2 \) and \( mgh \)). Since their masses are different, their energies are vastly different. Power also depends on mass.

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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