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C8 : Linear Momentum, Sum of KE is lost thermal or potential energy
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Sum of KE is lost thermal or potential energy
Complete inelastic collisions which objects stick together afterward
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Total momentum does not changed
only change in direction
LAW
The total momentum of an isolated system remains constant
When the net external force objects is zero, total momentum remains constant*
Impulse - The product of force and the time 
Momentum is conserved in all collisions
Collisions in which KE is conserved called ELASTIC , &
those in which it is called INELASTIC
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STEP TO SOLVE
- Make sure write the full equation if elastic or inelastic
- Resolve in X-axis & Y-axis
- Simplify and solve y-axis
- Check units and magnitudes of result
The total momentum of a system of particles
is equal the product of total mass & velocity of CM
The total force is equal to total mass multiplied by acceleration of CM
Ma_cm = Sum F_ext
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