What is the position vector of centre of mass of two particles of equal masses?

Show that in one dimensional elastic collision of two particales of equal mass,the partical exchange velocities after collisions.

Find the position of centre of the mass of the T-shaped plane from O,

What is centre of mass? Show that centre of mass of a system of particles is defined as the point whose position vec is given by vecR = frac(Sigmam_1vecr_)(M)

Write an expression for the velocity of the centre of a mass of particles.

What is the mass of 1 mole of nitrogen atoms?

Show that the total linear momentum of a system of particles is equal to the product of the total mass of the system and the velocity of its centre of mass.

Find the potential energy of a system of four particles each of mass m place at the vertices of a square fo side l. Also obtain the potential at the centre of the square.

What is the mass of 0.2 mole of oxygen atoms?