Show that in absence of any external forcce the centre of mass of two moving particles moves with uniform velocity .

Show that in absence of any external force the centre of mass of two moving particles moves with uniform velocity.

A body is moving with uniform velocity —

Find the velocity of the centre of mass of two identical particles moving with velocities v_(1) and v_(2) .

Calculate the net force acting on a body of mass 10 kg moving with a uniform velocity of 2 m/s ?

Can a particle, moving with a uniform velocity have a non-uniform speed?

Can a body moving with uniform speed have nonuniform velocity?

Two particles start moving from point A along a straight line AB at the same time in the same direction. One particle moves with a uniform velocity of 12 "m.s"^(-1) and the other with an acceleration of 2 "m.s"^(-2) and an initial velocity of 5 "m.s"^(-1) . After how much time will the two particles meet ?

Draw the displacement -time graphs for a particle moving with (i) uniform , (ii) non- uniform velocity.