During collision, which of the following statement is wrong?
A.there is a change in momentum of the system of individual bodies
B.the change in total momentum of the system of colliding particle is zero
C. the change in total energy is zero
D.law of conservation of momentum is not valid

In which of the following graphs, the total change in momentum is zero ?

Assertion : The total momentum of an isolated system of particles is conserved. Reason: The law of conservation of momentum follows from the second and third law of motion.

Consider the following two statements: A. Linear momentum of a system of partcles is zero. B. Kinetic energ of a system of particles is zero.

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.

Assertion: Internal forces cannot change linear momentum. Reason: Internal forces can change the kinetic energy of a system.

A : Internal forces can change the kinetic energy but not the momentum of the system. R : The net internal force on a system is always zero.

If angular momentum of a system is constant, which of the following will be zero

Assertion: If net force on a system is zero, then momentum of every individual body remains constant. Reason: If momentum of a system is constant, then kinetic energy of the system may change.

Assertion: During head on collision between two bodies let Deltap_1 is change in momentum of first body and Deltap_2 the change in momentum of the other body, then Deltap_1=Deltap_2 . Reason: Total momentum of the system should remain constant.

A block B is at rest on the rough horizontal surface as shown. Another block A collides with B . Then, which of the following statement is correct? ( i ) Impulsive friction acts on block B . ( ii ) Conservation of momentum can not be applied on a system (A+B) along x-"axis" for the situation just before and just after the collision. ( iii ) Conservation of momentum can be applied on system (A+B) along x-"axis" for the situation just before and just after the collision. ( iv ) Block A always moves along positive x-"axis" after collision.