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Question 30422
JEE Physics · Medium

Work, Power and Energy: Energy — Incline MCQ

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Energy — InclineMediumQuestion 30422

Question

A 3 kg block slides from rest down a smooth incline of height 5 m. Speed at the bottom is: (g = 10 m/s²)
  1. A
    5 m/s
  2. B
    10 m/s
    Correct
  3. C
    15 m/s
  4. D
    √50 m/s

Correct answer

10 m/s

Explanation

Using energy conservation: ½mv² = mgh → v = √(2gh) = √(2×10×5) = √100 = 10 m/s.

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