Momentum

• Define Momentum

  Momentum is a property of all moving objects. It is a vector quantity that depends on the mass and velocity of an object
• What is the equation for momentum?

  p = mv, where p is momentum in kg m/s, m is mass in kg, and v is velocity in m/s
• State the Law of Conservation of Momentum.

  In a closed system, the total momentum before an event (a collision or an explosion) is equal to the total momentum after the event
• Write the equation for conservation of momentum in a collision between two objects.

  m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂, where m is mass, u is initial velocity, and v is final velocity for objects 1 and 2
• Why is momentum conserved in explosions?

  Momentum is conserved in explosions because the total momentum before is zero, and the total momentum after is also zero as the different parts of the object travel in different directions, canceling out each other's momentum
• What is the equation for conservation of momentum when two objects recoil from each other?

  m₁v₁ + m₂v₂ = 0, where m is mass and v is velocity for objects 1 and 2