Q. A perfectly elastic collision occurs when

पूर्णतः लोचदार टक्कर तब होती है जब

A
Objects stick together
वस्तुएँ आपस में चिपक जाती हैं
B
Kinetic energy is lost
गतिज ऊर्जा नष्ट हो जाती है
C
Kinetic energy is conserved
गतिज ऊर्जा संरक्षित रहती है
D
Momentum is not conserved
गति संरक्षित नहीं है

Explanation

In a perfectly elastic collision, no kinetic energy is lost. Both kinetic energy and momentum are conserved. This is an ideal case—real-life collisions always have some energy loss due to friction, deformation, or heat.

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