Question

A box of mass 10 kg is pushed across the floor with a force of 25 N. A 2 N frictional force opposes the motion.
What is the acceleration of the box?
Fnet=Fp-Ff

ma=Fp-Ff

Let a= acceleration. Solve for a:

10kg*a=25N-2N

a=23N/10kg

a=2.3m/s^2

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