Physics Work & Energy SZABMU 2023
PMDC Verified Question 27 of 108
A motor boat is moving with velocity \( 4 \text{ ms}^{-1} \). The net force acting on it is 4000 N. what will be the power of the engine of boat?
A
1000 W
B
160 W
C
16 KW
D
1600 W
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: 16 KW
Concept:

Power can be calculated dynamically as the product of the driving force and the constant velocity of the object.

Formula:

$$ P = F \times v $$

Solution:

  • Force (\( F \)) = 4000 N


  • Velocity (\( v \)) = \( 4 \text{ m/s} \)


  • \( P = 4000 \times 4 = 16,000 \text{ Watts} \)


  • Convert to Kilowatts: \( 16,000 \text{ W} = 16 \text{ kW} \).


Why other options are incorrect:

Dividing force by velocity yields 1000 W (Option A). Missing zeros during calculation yields 160 or 1600 W.

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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