Topic 1 Momentum Basics Module 4

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  • Created by: Aoife
  • Created on: 15-01-13 21:06
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  • Momentum
    • Definition= mass x velocity
    • Newton's 2nd:  The rate of change of momentum is proportional to the resultant force and in opposite direction
      • F= (mv-mu) / t
        • Ft (Ns) = impulse
        • v-u / t = a so  F=ma
          • k=1 defined
    • M1U1 + M2U2 = M1V1 + M2V2
      • In an explosion, put = to zero!
        • Conservation of Linear Momentum : The total momentum of a system before and after a collision = constant provided no external force acts.
    • Conservation of Linear Momentum : The total momentum of a system before and after a collision = constant provided no external force acts.
    • Constant mass changing v so F= dP/t
      • Constant v changing mass so F=dP/t
  • Constant mass changing v so F= dP/t
    • Constant v changing mass so F=dP/t
  • Elastic collisions KE conserved

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danmeegan

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very good

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