Work, Energy and Power
Work done by constant and variable forces, kinetic and potential energy, work-energy theorem, conservation of mechanical energy, collisions.
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Take a full mock →Q1 · Work, Energy and Power · HARD
A particle of mass 1 kg is projected upward with a velocity of 20 m/s at an angle of 30° with the horizontal. The change in kinetic energy when it reaches the highest point is: (Take g = 10 m/s²)
Q2 · Work, Energy and Power · MEDIUM
A spring of force constant 800 N/m is compressed by 10 cm. The potential energy stored in the spring is:
Q3 · Work, Energy and Power · EASY
A body of mass 2 kg is moving with a velocity of 10 m/s. Its kinetic energy is: