Physics Force & Motion DUHS 2022
PMDC Verified Question 84 of 137
When a body moves with uniform velocity than it's:
A
Average velocity is zero
B
Instantaneous velocity is greater than average velocity
C
Instantaneous velocity is zero
D
Instantaneous velocity is equal to average velocity
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Instantaneous velocity is equal to average velocity
Concept:

Uniform velocity means the object's speed and direction remain absolutely constant for the entire duration of motion.

Solution:

  • If a car drives strictly at \( 60 \text{ km/h} \) East without ever speeding up, slowing down, or turning, its velocity at any given split-second (instantaneous) is \( 60 \text{ km/h} \) East.


  • If you calculate the total displacement over total time (average), it will also perfectly yield \( 60 \text{ km/h} \) East.


  • Therefore, for uniform motion, the instantaneous velocity is permanently identical to the average velocity.


Why other options are incorrect:

Differences between average and instantaneous only arise if the velocity fluctuates (acceleration/deceleration) over the journey.

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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