1.2.1 Measures motion under conditions of varying friction and extrapolates to explain how, in the absence of any retarding forces, an object will maintain its direction and speed, and explains that whenever an object speeds up, slows down, or changes direction, an unbalanced force must be acting on it;
(an object; speeds up; ) (Measures motion under conditions of varying friction and extrapolates; to explain; ) (an object; will maintain; its direction and speed; L:in the absence of any retarding forces) (an unbalanced force; must be acting; on it) (an object; explains; that whenever an object speeds up, slows down, or changes direction)
an object Measures motion under conditions of varying friction and extrapolates an object an unbalanced force an object
speeds up to explain will maintain must be acting explains
its direction and speed L:in the absence of any retarding forces
on it
that whenever an object speeds up, slows down, or changes direction