Momentum

• What is included in scalar

  • Speed
  • Time
  • Distance
  • Mass
• what is included in vector

  • velocity
  • force
  • displacement
  • momentum
• what is a scalar 


  something that has a magnitude
• what is a vector 


  something that has both magnitude and direction
• what is the conservation of momentum 


  momentum before collision = momentum after collision
• what is the equation P = MV


  momentum = mass * velocity
• what is momentum measured in 


  Kgm/s
• what is velocity measured in 


  m/s
• how do you calculate force 


  Force = change in momentum / time
• what is change in momentum measured in

  Kgm/s
• what is time measured in

  seconds (s)
• What is mass measured in 


  Kilograms (Kg)
• What are the 2 ways of losing momentum to stop

  1. A large force for a short time
  2. A small force for a long time
• What happens to linear momentum if there are no external acts?

  Linear momentum is always conserved
• How does the total linear momentum of two objects behave during a collision?

  Total linear momentum before collision is equal after collision
• How can the conservation of linear momentum be used after a collision?

  To work out the velocity of objects
• What is the principle of conservation of linear momentum in collisions?

  • Linear momentum is conserved without external forces
  • Total momentum before collision equals total momentum after
  • Useful for calculating post-collision velocities