Question

A ball of mass 5 kg moving with velocity 2 ms–1 collides with the another ball of mass 2 kg moving with the velocity 2 ms–1 in opposite direction. After the collision they stick together. Their common velocity is

Answer 1

m1=5kg
v1=2m/s
m2=2kg
v2=2m/s
in this case the mass were combined =m1+m2
therefore
m1v1+m2v2=m1u1+m2u2
=5×2+2×2=(m1+m2)V
=10+4=(5+2)v
v=14/7
=2ms^1
don't forget to make it brainiest

Answer 2

Ans is in pic friend