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Physics P10 - Coggle Diagram

- - - - Change of Velocity = 0 - 90 = -90 m/s
        
        Deceleration = -90 / 0.0003 so = 300000 m/s2
        
        Change of Momentum = 0.004 kg × -90 m/s = -0.36 kg m/s
        
        Force = -0.36 / 0.0003 = -1200N
- - - - If the object continues in the same direction
    - - If the object goes in the opposite direction
  - - - Mass of gun × Recoil Velocity of gun = -(Mass of shell × Velocity of shell)
        
        2000 kg × Recoil Velocity of gun = -(20 kg × 120 m/s)
        
        Recoil Velocity of gun = -((20 kg × 120 m/s) / 2000 kg) = -1.2 m/s
        
        Momentum is a vector quantity, so if two object are travelling in opposite directions, one has positive momentum, and the other has negative momentum.