A 2 kg crate on a rough horizontal floor is pushed by a horizontal force of 40 N. The coefficient of kinetic friction is 0.25. Taking m/s, find the acceleration.
Answer and explanation
Correct answer: B. 17.55 m/s
- Step 1: Friction N.
- Step 2: m/s.
Answer
17.55 m/s.
Why not the others: 20 m/s: friction is ignored. 22.45 m/s: friction is added instead of subtracted. 35.1 m/s: the net force is not divided by the mass.
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