O Levels Physics (5054)•5054/12/O/N/20

Explanation
Newton's Second Law for the driving force
Steps:
- Calculate net force: F_net = mass × acceleration = 1000 kg × 2 m/s² = 2000 N forward.
- Frictional force opposes motion at 200 N backward.
- Net force = driving force - frictional force.
- Driving force = F_net + frictional force = 2000 N + 200 N = 2200 N.
Why D is correct:
- The options do not include 2200 N; D (3200 N) may result from miscalculating acceleration as 3 m/s² (3000 N net + 200 N = 3200 N), but per given data, it's incorrect.
Why the others are wrong:
- A: Subtracts friction from net force (2000 N - 1200 N? irrelevant error).
- B: Arbitrary value, ignores ma calculation.
- C: Equals net force only, forgets to add opposing friction.
Not enough information to match options exactly—likely a problem error. Final answer: 2200 N
Topic: Balanced and unbalanced forces
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