STANDARDPhysics-Work, Energy and Power
STANDARD Physics Kinetic Energy MCQ Question
Type: MCQ-conceptual-Medium-Class 11
If the force acting on a body is inversely proportional to its speed, then its kinetic energy is
A
linearly related to time
B
inversely proportional to time
C
inversely proportional to the square of time
D
a constant.
Correct Answer
Option A
Detailed Explanation
Given F ∝ 1/v, we have F = C/v where C is a constant. By integrating the equation of motion, we find that kinetic energy K = 1/2 mv² = Ct, showing that K is linearly related to time.
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