Fly in a straight line unless an outside force changes its course because i tried it once in a baseball game that my mommy rekt me in.
this is simple the word your looking for is 8 letters long and the definition is key to the answer
Kinetic energy is energy that a body possesses by virtue of being in motion, there for if an object is moving, it has kinetic energy.
Example; A roller coaster sitting on top of hill has potential energy. When it starts to move and is going down the hill, it has kinetic energy. :)
Well,
When an object's velocity changes, we call it acceleration.
Acceleration: The time rate of change in an object's velocity
By raising a position of an object, Its potential energy increases.