INTRODUCTION
Momentum and energy conservation can be described in terms of collisions of two carts a tracks.
Momentum conservation occurs when there is no net external force experience by the system of
the two carts while energy is only conserved when certain types of forces are exerted between
the carts. Momentum is expressed as a product of mass of the object and it velocity (Raymond
A. Serway).
Momentum=velocity∗mass
The types of collision can be classified in terms of kinetic energy; the main classification types
are elastic (kinetic energy is conserved), inelastic (kinetic energy is lost) or completely inelastic
(the object stick together after collision). Super-elastic collision condition occurs when kinetic
energy is gained. kinetic energy (KE) is expressed as product of mass and squared velocity
(Westerterp).
KE= 1
2∗mass∗Velocity2
OBJECTIVES
 To observe collisions between two carts, testing for the conservation of momentum.
 To measure the energy changes during different types of collisions.
 To classify collisions as elastic, inelastic, or completely inelastic.
MATERIALS
Computer
Vernier computer interface
Logger Pro
Two Vernier Motion Detectors
Vernier Dynamics Track
Two Vernier Dynamics Carts with magnetic and hook-and-pile strip bumpers
PRELIMINARY QUESTIONS
1. After collision ball 1 will remain in stationary position while ball 2 will move away at a
velocity that ball 1 was moving before colliding it.
2. .

Conservation of Momentum and Energy

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