NEET Physics Work-Energy Theorem MCQ Question
A block of mass 2 kg slides down a frictionless incline from a height of 5 m. What is the speed of the block at the bottom of the incline, assuming it started from rest?
9.9 m/s
10 m/s
10.1 m/s
9.8 m/s
Correct Answer
Detailed Explanation
The initial potential energy is converted into kinetic energy as the block slides down. Using the work-energy theorem, mgh = 0.5mv^2, where m = 2 kg, g = 9.8 m/s², and h = 5 m. Solving for v gives v = 10 m/s.
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