Conservation of linear momentum

• 1. What did Isaac Newton really say about the conservation of momentum?

  F=change in momentum/change in time
• What does the Theory of the Conservation of Linear Momentum tell us?

  The total linear momentum at any time must be the same as the linear momentum at any other time.
• What is the theory of the Conservation of linear Momentum stated mathematically?

  The conservation of linear momentum is stated mathematically as: m_1v_1 + m_2v_2 = m_1v_1' + m_2v_2' or p1+p2=p1'+p2'
• A billiard ball strikes a stationary billiard ball of equal mass. The first billiard ball is going at 3m/s before the collision, and stops after the collision. What is the velocity of the second billiard ball after the collision?

  3m/s
• What is a perfectly inelastic collision?


  A perfectly inelastic collision is one in which the parts become one after collision
• What is the equation for perfectly inelastic collisions in one dimension?


  m1v1+m2v2=(m1+m2)u
• What is a perfectly elastic collision?

  A perfectly elastic collision is one in which mechanical energy is conserved.
• What are the equations for perfectly elastic collisions?

  m1v1+m2v2=m1u1+m2u2 and 1/2m1v1+1/2m2v2=1/2m1u1+1/2m2u2