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3 Mechanics

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Question 207

The position of a test vehicle along a straight track is modelled by s=t3−9t2+24ts=t^3-9t^2+24ts=t3−9t2+24t metres for 0≤t≤80\leq t\leq80≤t≤8.

a.

Find the maximum speed predicted by the model at the endpoints or at an instant when the acceleration is zero.

[4]
b.

Give one reason why this polynomial model should not be extrapolated indefinitely.

[1]
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3 Mechanics Questions

  1. A Level
  2. /Maths
  3. /3 Mechanics

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