Questions
Consider the following two statements (A) Linear momentum of a system of particles is zero (b) Kinetic energy of a system of particles is zero' Then
a
A implies B and B implies A
b
A does not imply B and B does not imply A
c
A implies B and B does not imply A
d
A does not imply B but B implies A.
detailed solution
Correct option is D
If the vector sum of the velocities of the particles of a system is zero , then linear momentum of the centre of mass of the system is also zero, but kinetic energies of the particles are not zero .If kinetic energy of a system of particles is zero then the particles must be at rest and in that case linear momentum of the system must be zero.Hence option (4) is right .Talk to our academic expert!
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A light body A and a heavy body B have equal linear momentum. Then the KE of the body A is
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