NEET Physics Work-Energy Theorem MCQ Question
A block of mass 5 kg is released from rest from a height of 10 m on a frictionless inclined plane. What is the kinetic energy of the block at the bottom of the incline?
490 J
245 J
98 J
49 J
Correct Answer
Detailed Explanation
Using the work-energy theorem and the fact that the force of gravity is conservative, the initial potential energy (mgh) is converted entirely into kinetic energy at the bottom. mgh = (5 kg)(9.8 m/s²)(10 m) = 490 J.
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