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--- 183_notes:grav_pe_graphs [2021/04/01 16:47] – [Mathematical proof of the approximation] stumptyl
+++ 183_notes:grav_pe_graphs [2021/04/01 16:57] – [Graphing Kinetic Energy] stumptyl
@@ Line 67: / Line 67: @@
 [{{ 183_notes:grav_potential_kinetic.png?450|A graph of the potential, kinetic, and total energy of a gravitationally bound system. The kinetic energy is only for the less massive object in the system. The assumption is that it is much less massive than the larger object.}}]
-It is often the the kinetic energy of the less massive object which is graphed along side the potential energy of the system and the total energy. For a //bound system//, this graph looks like the one to the right (green line is the kinetic energy).
+It is often the the kinetic energy of the less massive object which is graphed along side the potential energy of the system and the total energy. For **a bound system**, this graph looks like the one to the right (green line is the kinetic energy).
 The kinetic energy graph has the same characteristic shape as the potential energy graph, but it is a reflected version. As the potential energy gets larger (less negative), the kinetic gets smaller and vice versa. The kinetic energy cannot become negative, so its graph terminates at zero energy. This is the farthest location the less massive object can reach with the given total energy.
-For an //unbound system// the kinetic energy levels off to the value of the total (positive) energy of the system. When the less massive object is infinitely far away, the potential energy of the system goes to zero.
+For an **unbound system** the kinetic energy levels off to the value of the total (positive) energy of the system. When the less massive object is infinitely far away, the potential energy of the system goes to zero.
 ==== Examples ====
   * [[:183_notes:examples:videoswk8|Video Example: Evaluating potential energy graphs (in an orbit)]]