unit quiz

• momentum - measure of moving object's resistance to change in motion
• momentum - product of object's mass and velocity
• translational momentum / linear momentum - other word for momentum
• objects at REST do NOT have MOMENTUM
• p = MV
• momentum is a VECTOR QUANTITY
• right = east = positive
• left = west = negative
• velocity changes = momentum changes
• IMPULSE - force applied by an object to another object that causes the object to move at a given time interval
• IMPULSE - change in momentum of an object
• energy that kinetic is transferred to: SOUND, HEAT, LIGHT
• elastic collision - total energy is the same
• elastic collision - two objects bounce off each other
• perfectly elastic collision - completely bounce off each other
• inelastic collision - loss of some energy
• perfectly inelastic collision - stick to each other
• ra no. 8750 - mandatory use of seat belts
• what to use:

  • airbags
  • child restraint seats
  • pre collision seats
  • safety glass