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Work, Energy, Power and Collision question bank (Physics)

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Q1.

$A$ block of mass '$m$' moving on a frictionless horizontal surface collides with a spring of spring constant '$K$' and compresses it through a distance '$x$'. The maximum momentum of the block after collision is

(A)

zero

(B)

$\sqrt{Km} x$

(C)

$mx^2/K$

(D)

$Kx^2/2m$

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Q2.

$A$ wooden block of mass $m$ moves with velocity $v$ and collides with another block of mass $4m$,which is at rest. After the collision,the block of mass $m$ comes to rest. The coefficient of restitution will be:

(A)

$0.70$

(B)

$0.25$

(C)

$0.40$

(D)

$0.50$

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