A sphere of mass 0.1,,kg is attached to a cord of 1,m length. Starting from height of its poi

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5.Work, Energy, Power and Collision

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A sphere of mass $0.1\,\,kg$ is attached to a cord of $1\,m$ length. Starting from the height of its point of suspension this sphere hits a block of same mass at rest on a frictionless table. If the impact is elastic, then the kinetic energy of the block after the collision is ............. $\mathrm{J}$

A

$1$

B

$10$

C

$0.1$

D

$0.5$

Solution

$K.E = 0.1 \times 10 \times 1 = 1J$

Standard 11

Physics

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