Question

What is the ratio KEafter/KEbefore of the total kinetic energy after the collisions occur to that before the collisions occur?

Answer 1

is called square of Coefficient of Restitution

Step-by-step explanation:

As we know that the coefficient of restitution is the ratio of the body after collision to the ratio of the body before collision.

Mathematically:

`e=(v_f)/(v_i)`

where:

`v_f=` relative velocity after collision

`v_i=` relative velocity before collision

also, in terms of Kinetic energy:

`e=\sqrt{(KE_f)/(KE_i) }`

where:

`KE_f=` relative kinetic energy after collision

`KE_i=` relative kinetic energy before collision

• e=0 for perfectly elastic collision
• 0<e<1 for real world inelastic collision
• e>1 for the collision in which energy is released
• e<1 for the objects passing through one another without fully engaging.