Multiple choice general knowledge science & technology

If a 10kg object is pushed with a 20N force and there is a coefficient of friction of 0.4, what will the acceleration be?

  1. 0 meters per second squared

  2. 8 meters per second squared

  3. 80 meters per second squared

  4. 0.8 meters per second squared
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Net force = applied force - friction. Friction = μmg = 0.4 × 10 × 9.8 = 39.2N. Applied force = 20N, so friction exceeds applied force. The object won't move, meaning acceleration is 0 m/s². Options B and D come from incorrectly ignoring friction or misapplying the formula.

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