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**Unformatted text preview: **ing with vectors and that energy is scalar.
Therefore we first start by writing the kinetic energy as 1
2 (14) where v represents the magnitude of the velocity. However, in this experiment, we are only dealing
with motion in one direction, thus we can write the kinetic energy in the more familiar form 1
2 (15) The next thing that we must realize is that we do not have a change in elevation. Therefore we
have NO potential energy; however, we do have another form of energy. It is called internal energy and it
is denoted as Q. This quantity represents the net loss or the net gained in kinetic energy. Because energy
must be conserved, the value can be interpreted as the internal energy of the system because energy lost in
the collision will be transferred to the internal energy as sound, heat, vibration, etc. Thus we can write the
general form of the conservation of energy as (16) 5 or as in our case of one dimensional motion, we can write the conservation of energy as 1
2 1
2 1
2 1
2 (17) Therefore we can write the change in internal energy as 1
2 ∆ 1
2 1
2 1
2 (18) Equation (18) gives us the loss in internal energy; however, we want the increa...

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