Alicia Wong
June 23, 2018
PHY 133 L69
TA: Alfonso Lanuza
Momentum and Energy

Introduction/Theory
In physics, a closed system is a physical system that doesn't exchange any matter with its
surroundings, and isn't subject to any net force whose source is external to the system. Therefore
when there is a closed system, energy must be conserved within that system. This means that
energy will neither enter nor leave that system however, it is possible that the energy may be
transformed into different forms of heat.
During this lab, we will look at the transfer of kinetic and spring potential energy using
our iOlab device. We will also look at the momentum specifically the relationship between
momentum, mass, and velocity. In order for momentum to be conserved there cannot be any
external forces acting upon the system. If momentum is conserved then we can use the
momentum of the objects found before collision to measure the momentum after the collision.
During the lab we will not be using a closed system to find the difference in momentum
of objects before and after a collision however, the force th