Do they know they are playing with centripetal force?
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Centripetal Force Examine

Centripetal Force is the scientists' name for the force experienced by an object that is moving in a curve rather than a straight line.
Roller coaster
Children playing on a roundabout
Theme park rides would be nothing without centripetal force!
Have a look at some or all of these movies - they each show different aspects of forces and movement. You can just watch the movies or use the controls to delve a bit deeper.