NEET Physics Work-Energy Theorem MCQ Question
Consider a diagram showing a block of mass m sliding down a frictionless inclined plane from height h. The work-energy theorem is applied to determine the speed of the block at the bottom of the incline. Which of the following expressions represents the final kinetic energy of the block?
mgh
1/2 mv^2
mgh - 1/2 mv^2
mgh + 1/2 mv^2
Correct Answer
Detailed Explanation
The work-energy theorem relates the change in kinetic energy to the work done. For a frictionless incline, the work done by gravity is mgh, which equals the increase in kinetic energy at the bottom.
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