A force of 20 N acts on a mass of 4 kg. The acceleration produced is
- A. 0.2 m s-2
- B. 5 m s-2
- C. 16 m s-2
- D. 80 m s-2
Explanation
From F equal to ma, the acceleration is 20 divided by 4, which is 5 m s-2. The answer 80 comes from multiplying instead of dividing, and 0.2 from inverting the ratio. Always check that the units resolve to metres per second squared.