Pearson Active Physics Best Fix Direct

You attempt: “A 2 kg box is pushed with 10 N. Friction is 4 N. Find acceleration.” 5 m/s² (You forgot to subtract friction) System: “You used $F=ma$ with 10 N only. Remember: net force = applied − friction. Watch this 30-sec animation on net force.” Next problem: Similar but with numbers chosen so the wrong answer (ignoring friction) seems plausible — now with a hint button.

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