physics
posted by hi .
a student pushes a 10 kg box across a warehouse floor. if the boz accelerates at 3 m/s/s and the force of friction is 20 newtons. determine the size of the students applied force?

Fn = Fap  Ff = ma,
Fap  20 = 10 * 3 = 30N,
Fap = 30 + 20 = 50N = Applied force.
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