So for an object moving in a circle, there must be an inward force acting upon it in order to cause its inward acceleration.
The equation of the centripetal force :.
The ship then swings down under the influence of gravity.
At the given velocity at the bottom of the swing, there is enough kinetic energy to send the child all the way over the top, ignoring friction.
Deceleration literally means that speed is always decreasing over a period of time.
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