Two balls are thrown simultaneously in air. The acceleration of the centre of mass of the two balls when in air,

Options

A. depends on the masses of the two balls
B. depends on the speeds of the two balls
C. is equal to g (Acceleration due to gravity)
D. depends on the direction of motion of the two balls.

Answer

C

Explanation

We know that,
Acceleration of centre of mass
`a_(cm)=(m_(1)a_(1)+m_(2)a_(2))/(m_(1)+m_(2))`
`a_(cm)=(g(m_(1)+m_(2)))/(m_(1)+m_(2))`
`a_(cm)=g`