# Physics

### Answers

Answer: The equation used in this situation is the law of conservation of momentum, which states that the total momentum of a system remains the same before and after a collision (provided no external forces are acting on it). The equation is: m1 * v1 + m2 * v2 = m1 * v1' + m2 * v2' Where: m1 = Mass of first ball (0.200kg) v1 = Velocity of first ball prior to collision (0.3m/s) m2 = Mass of second ball (0.1kg) v2 = Velocity of second ball prior to collision (0m/s) v1’ = Velocity of first ball after the collision v2’ = Velocity of second ball after the collision (0.26m/s) Using the equation, we can solve for v1’: 0.2 * 0.3 + 0.1 * 0 = 0.2 * v1' + 0.1 * 0.26 0.06 = 0.2 * v1' v1' = 0.3m/s