Physics 5054 · O Level · Balanced and unbalanced forces

Balanced and unbalanced forces — practice question

A car moves along a road. The force exerted on the car by the engine is $800\,\text{N}$. The car’s motion depends on the magnitude of the total resistive force $R$. Which row indicates the car’s motion for the stated value of $R$?

  • A$R = 500\,\text{N}$, deceleration
  • B$R = 800\,\text{N}$, acceleration
  • C$R = 900\,\text{N}$, deceleration
  • D$R = 1000\,\text{N}$, acceleration

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