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Work, Energy, Power and Collision — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsWork, Energy, Power and Collision1 Mark
Question
Assertion : A quick collision between two bodies is more violent than slow collision, even when initial and final velocities are identical.
Reason : The rate of change of momentum determine that force is small or large.
✓

Answer

(a) In a quick collision, time $t$ is small. As $F \times t=$ constant, therefore, force involved is large, i.e. collision is more violent in comparison to slow collision.

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