{{}} A white ball of mass 1.0 kg moving with initial speed u = 0.5 m s -1 collides with stationary red ball of same mass, they move forward making angle of 90 between their paths. Their speed is

{{}} A white ball of mass 1.0 kg moving with initial speed u = 0.5 m s

1.	{{}} A white ball of mass 1.0 kg moving with initial speed u = 0.5 m s -1 collides with stationary red ball of same mass, they move forward making angle of 90 between their paths. Their speed is
A.	1 m s -1
B.	0.354 m s -1
C.	2 m s -1
D.	3 m s -1
Answer» C. 2 m s -1