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Consider the following two statements 1. Linear momentum of a system of particles is zero 2. Kinetic energy of a system of particles is zero Then

(a)  1 implies 2 and 2 implies 1

(b)  1 does not imply 2 and 2 does not imply 1

(c)   1 implies 2 but 2 does not imply 1

(d)  1 does not imply 2 but 2 implies 1

Answer: d

(3)

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