Physics 9702 · AS & A Level · Equations of motion

Equations of motion — practice question

An aircraft starts from rest on a runway and accelerates uniformly until it reaches its take-off speed of $58\,\text{m s}^{-1}$. Its acceleration is $4.2\,\text{m s}^{-2}$, and it covers $74\%$ of the runway length in reaching this speed. Determine the length of the runway.

  • A$300\,\text{m}$
  • B$540\,\text{m}$
  • C$590\,\text{m}$
  • D$800\,\text{m}$

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