Question

A boy drags a suitcase along the ground with a force of 100 N. If the frictional force opposing the motion of the suitcase is 50 N, what is the resultant forward force on the suitcase?

Answer 1

Answer:50N

Explanation:

Fortunately, 'force' is a vector.  So if you know the strength and direction

of each force, you can easily addum up and find the 'resultant' (net) force.

When we talk in vectors, one newton forward is the negative of

one newton backward.   Hold that thought, while I slog through

the complete solution of the problem.

           (100 N forward) plus (50 N backward)

       =  (100 N forward) minus (50 N forward)

       =           50 N forward .

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