Three bodies having masses 5 kg, 4 kg and 2 kg is moving at the speed of 5 `m/s , 2 `m/s and 5.5 m/s respectively along X-axis.The magnitude of velocity of centre of mass is

Three bodies having masses 5 kg, 4 kg and 2 kg is moving at the speed of 5 m//s and 2 m//s respectively along X-axis.The magnitude of velocity of centre of mass is

Two bodies of masses 2 kg and 4 kg are moving with velocities 2 m/s and 10 m/s respectively along same direction. Then the velocity of their centre of mass will be

Two particles of mass 1 kg and 0.5 kg are moving in the same direction with speed of 2 m//s and 6 m/s respectively on a smooth horizontal surface. The speed of centre of mass of the system is

Two bodies of masses 1 kg and 2 kg are moving in two perpendicular direction with velocities 1 m//s and 2 m//s as shown in figure. The velocity of the centre of mass (in magnitide) of the system will be :

The centres of three spherical masses of 1 kg, 2 kg and 3 kg have co-orinates (4,0) m,(0,3)m and (-2,5)m respectively. What is the position vector of its centre of mass is terms of its x and y co-ordinates?

Two particle of mass 2 kg and 1 kg are moving along the same straight line with speeds 2m//s and 5m//s respectively. What is the speed of the centre of mass of the system if both the particles are moving (a) in same direction (b) in opposite direction ?

Two spheres of masses 1 kg and 2 kg are moving with velocities of 10 m/s and 5 m/s respectively in the same direction. After the collision the velocity of the lighter sphere decreases by 4 m/s. What is the coefficient of restitution?

Two bodies of different masses 2kg and 4kg are moving with velocities 2m//s and 10m//s towards each other due to mutual gravitational attraction. Then the velocity of the centre of mass is

Two particles of mass 1kg and 2kg are moving along the same line with speeds 2m//s and 4m//s respectively. Calculate the speed of the centre of mass of the system if both the particles are moving in the same direction.