STANDARD Physics Conservation of Energy MCQ Question
A car of mass 1000 kg moving with a speed 18 km h⁻¹ on a smooth road collides with a horizontally mounted spring of spring constant 6.25 × 10³ N m⁻¹. The maximum compression of the spring is
1 m
2 m
3 m
4 m
Correct Answer
Detailed Explanation
At maximum compression, the kinetic energy of the car is converted entirely into the potential energy of the spring. Using the formula ½mv² = ½kx², we find x = √(mv²/k). Substituting the given values, x = 2 m.
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