A-LevelPhysicsDynamics9702/12 · May/June 2019 · Q101 Mark
A car has mass m. A person needs to push the car with force F in order to give the car acceleration a. The person needs to push the car with force 2F in order to give the car acceleration 3a. Which expression gives the constant resistive force opposing the motion of the car?
Ama
B2ma
C3ma
D4ma
✓ Correct answer
A: ma
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