InElastic Collisions

1
In-Elastic Collisions

• When 2 objects collide and move together as one
  mass they are perfectly inelastic.

2
Perfectly In-Elastic Collisions

• m1v1im2v2i ( m1m2)vf
• When using this equation it is important to pay
  attention to the signs that indicate direction.
  moves right moves left etc see p 223 text

3
KE is Not constant in In-Elastic

• In an in-elastic collision KE is not conserved,
  some KE is converted to sound and internal energy
  as objects collide.
• Use KE formulae from Ch5 ?KE KEf-KEi

4
Strategy for KE Collisions

• Strategy calculate KEi for all objects
  (KE1iKE2i etc KEtot I
• Then calculate KEf for all objects using the same
  method.
• Finally apply the KEtotf-KEtoti ?KE to find the
  KE that was converted to other energy during the
  collision.