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$75.0 \textrm{N}$

Giancoli 6th Edition, Chapter 4, Problem 1

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Chapter 4, Problem 1 is solved.

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Transcript for this Giancoli solution

The only force this child on the sled is going to experience horizontally speaking is this applied force. So the applied force will equal the net force, and that means we have a formula for it because F_net equals mass times acceleration. So we plug in the sixty kilogram mass of the child with sled times one and a quarter meters per second squared acceleration giving us seventy five point zero Newtons is the force needed to do that in the 6th Edition. In the 5th Edition the acceleration is one point one five meters per second squared which we substitute to get an answer in the 5th edition of sixty nine point zero Newtons.

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