Physics Force & Motion UHS 2023
PMDC Verified Question 25 of 137
The velocity-time plot for a moving particle shows a straight line. This means:
A
The particle has constant acceleration
B
The particle has never turned around
C
The particle has zero displacement
D
The data in insufficient
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: The particle has constant acceleration
Concept:

The slope of a velocity-time graph represents acceleration.

Solution:

  • A straight line strictly possesses a constant, unchanging geometric slope.


  • Because the slope is constant, the physical quantity it represents (acceleration) must also be perfectly constant.


  • It might be zero (horizontal line) or a non-zero constant (tilted line), but it strictly classifies as uniform/constant acceleration.


Why other options are incorrect:

If the line crosses the x-axis, the velocity becomes negative, meaning the particle DID turn around. Displacement is the area under the curve, which changes constantly.

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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