1. Two bodies of mass 3 kg and 4 kg are suspended at the ends of massless string passing over a
frictionless pulley. The acceleration of the system is (Take g = 9.8 m/s2)
2.A ball of mass 100 g and another ball of 120 g moves towards each other with speeds 6 m/s
and 5 m/s respectively. If they stick to each other colliding, what would be the velocity of the
combined mass after the collision?