Physics Force & Motion DUHS 2023
PMDC Verified Question 44 of 137
Due to sudden rain, which of the following is true for the car moving on the road?
A
Force of engine decreases
B
Balance will not be maintained
C
Direction of motion will be effected
D
Linear momentum increases
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Balance will not be maintained
Concept:

Friction is heavily dependent on the nature of the surfaces in contact. Water acts as a lubricant.

Solution:

  • Rain introduces water between the car's tires and the asphalt, significantly reducing the coefficient of friction.


  • Without sufficient friction, the tires lose their grip, causing the car to slide (hydroplane) and lose its steady balance and control.


Why other options are incorrect:

Rain does not directly decrease the engine's mechanical power. Direction isn't necessarily affected unless a turn is attempted. Momentum does not suddenly increase just because the road is wet.

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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