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Two identical spheres A and B are free to move and to rotate about their centres. They are given the same impacts J. The line of action of the impulses pass through the centre of A and away from the centre of B.

1) A and B will have same speed.

2) B will have greater kinetic energy than A.

3) they will have the same kinetic energy, but the linear kinetic energy of B will be less than of A.

4) the kinetic energy of B will depend on the point of impact of the impulse on B.

Which of the following is correct?

a) 1,2 and 3

b) 2,3 and 4

c) 1,3 and 4

d) 1,2 and 4

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