A helium atom (mass of 4.00 u) traveling at 683 m/s to the right collides with a helium atom (mass of 32 u) moving in the same direction at 401 m/s. After the collision the oxygen molecule is traveling to the right at 418 m/s. what is the final velocity of the helium atom after the collision?
Two particles collide and i need to know the final velocity of one.?
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