Example:  a boy sliding on a slide     Rolling Friction:  The frictional force exerted when an object rolls over the surface of a stationary object is called Rolling Friction.
(a boy; sliding; L:on a slide; T:when an object rolls over the surface of a stationary object) (a slide; exerted; T:when an object rolls over the surface of a stationary object) (an object; rolls; over the surface of a stationary object)
a boy a slide an object
sliding exerted rolls
L:on a slide T:when an object rolls over the surface of a stationary object
T:when an object rolls over the surface of a stationary object
over the surface of a stationary object