Work-energy theorem, conservative forces, potential energy, collisions.
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Q1 · Work, Energy and Power (Class 11) · EASY
A force of 20 N displaces a body through 5 m in its own direction. What is the work done?
Q2 · Work, Energy and Power (Class 11) · MEDIUM
A body of mass 2 kg is thrown vertically upward with kinetic energy 200 J. What is the maximum height reached? (Take g = 10 m/s²)
Q3 · Work, Energy and Power (Class 11) · HARD
A spring of spring constant 200 N/m is compressed by 0.1 m. What is the potential energy stored in the spring?
Q4 · Work, Energy and Power (Class 11) · EASY
The kinetic energy of a body is increased by 300%. By what percentage is its momentum increased?