Elastic and inelastic collisions

MBBphys

Gold Member
1. Homework Statement
In a closed system, in an inelastic collision, momentum and total energy is conserved, but total kinetic energy is not.
But how is this possible? If we have a change in total kinetic energy, we have a change in velocity, and so we must have a change in momentum as:
momentum=mass*velocity
So I am really confused!
Thanks :)

2. Homework Equations
n/a

3. The Attempt at a Solution
n/a

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TSny

Homework Helper
Gold Member
Keep in mind that kinetic energy is a scalar quantity and momentum is a vector quantity.

Think about the example of two equal masses moving toward each other with equal speeds and the two masses stick together and come to rest after they collide.

"Elastic and inelastic collisions"

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