Practice question
Question
A 1000kg car at 10m/s hits a spring (k\=5×103N/m). What is the maximum compression?
Explanation
Initial K=12×1000×102=50000J. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 4 m/s. This satisfies dimensional consistency and physical conditions given, so option A is scientifically correct.
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