A 30 kg girl and a 25 kg boy face each other on friction-free roller blades.the girl pushes the boy,who moves?

They both move, in opposite directions, of course they have different speeds.





EDIT;


Well, there is one joke answer, and some slight misunderstandings, the mass does matter, the girl will be moving slower, so in a _given period of time_ the girl will move less distance, but with no friction, both will move forever

A 30 kg girl and a 25 kg boy face each other on friction-free roller blades.the girl pushes the boy,who moves?
They both do, every action has an equal and opposite reaction
Reply:both will move in the same direction
Reply:They both move in opposite directions. The girl moves less distance than the boy.
Reply:They will both move, but they will not move at the same velocity. Even though they are in a frictionless environment, their mass still determines the amount of inertia each has. More mass = more inertia. A body at rest tends to stay at rest. The more massive girl will not move as fast as the boy.
Reply:If there is no friction, then their weight shouldn%26#039;t be a factor at all (gravity is the force pulling you towards the ground. If there%26#039;s no difference in friction between two opposing weights, gravity plays no role in how much friction is created between the ground and the rollerblades). They will move in opposite directions at the exact same speed.



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