Question

Select One Option Correct from the following : Two blocks of masses 10 kg and 4 kg are connected by a spring of negligible mass and placed on a frictionless horizontal surface. An impulse gives a velocity of 14 m/s to the heavier block in the direction of the lighter block. The velocity of the centre of mass is
(A)30 m/s
(B)20 m/s
(C)10 m/s
(D)5 m/s

Answer 1

a is correct I think.

Answer 2

Select One Option Correct from the following : Two blocks of masses 10 kg and 4 kg are connected by a spring of negligible mass and placed on a frictionless horizontal surface. An impulse gives a velocity of 14 m/s to the heavier block in the direction of the lighter block. The velocity of the centre of mass is

(A)30 m/s

(B)20 m/s

✴️ (C)10 m/s

(D)5 m/s