Friction will slow the rolling toy or ball as the surface of the toy rubs against the paint on the paper.
(Friction; will slow; the rolling toy or ball; T:as the surface of the toy rubs against the paint on the paper) (the surface of the toy; rubs; against the paint on the paper)
Friction the surface of the toy
will slow rubs
the rolling toy or ball T:as the surface of the toy rubs against the paint on the paper
against the paint on the paper