The velocities of three particles of masses 20g, 30g and 50 g are `10veci,10vecj and 10veck` respectively. Find the velocity of the centre of mass of the three particles?

Options

A. `2vec(i)+3vec(j)+5vec(k)`
B. `10(vec(i)+vec(j)+vec(k))`
C. `20vec(i)+30vec(j)+5vec(k)`
D. `20vec(i)+30vec(j)+50 vec(k)`

Answer

A