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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A block ‘A’ of mass m1 hits horizontally the rear side of a spring (ideal) attached to a block B of mass m^2 resting on a smooth horizontal surface. After hitting, ‘A’ gets attached to the spring. Some statements are given at any moment of time: i. If velocity of A is greater than B, then kinetic energy of the system will be decreasing. ii. If velocity of A is greater than B, then kinetic energy of the system will be increasing. iii. If velocity of A is greater than B, then momentum of the system will be decreasing. iv. If velocity of A is greater than B, then momentum of the system will be increasing. Now select correct alternative:

A block ‘A’ of mass m1 hits horizontally the rear side of a spring (ideal) attached to a block B of mass m^2 resting on a smooth horizontal surface. After hitting, ‘A’ gets attached to the spring. Some statements are given at any moment of time: i. If velocity of A is greater than B, then kinetic energy of the system will be decreasing. ii. If velocity of A is greater than B, then kinetic energy of the system will be increasing. iii. If velocity of A is greater than B, then momentum of the system will be decreasing. iv. If velocity of A is greater than B, then momentum of the system will be increasing. Now select correct alternative:

'A' gets attached to the spring. Some statements are given at any moment of time: i. If velocity of A is greater than B A block 'A' of mass m1 hits horizontally the rear side of a spring (ideal) attached to a block B of mass m^2 resting on a smooth horizontal surface. After hitting then kinetic energy of the system will be decreasing. ii. If velocity of A is greater than B then kinetic energy of the system will be increasing. iii. If velocity of A is greater than B then momentum of the system will be decreasing. iv. If velocity of A is greater than B then momentum of the system will be increasing. Now select correct alternative: