A 2 kg crate on a rough horizontal floor is pushed by a horizontal force of 50 N. The coefficient of kinetic friction is 0.25. Taking m/s, find the acceleration.

Answer and explanation

Correct answer: D. 22.55 m/s

  1. Step 1: Friction N.
  2. Step 2: m/s.
Answer
22.55 m/s.
Why not the others: 25 m/s: friction is ignored. 27.45 m/s: friction is added instead of subtracted. 45.1 m/s: the net force is not divided by the mass.

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