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3 Mechanics

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Question 189

During a test, the velocity of a rail vehicle is modelled by v=(16+6t−t2) m s−1v=(16+6t-t^2)\text{ m s}^{-1}v=(16+6t−t2) m s−1 for t≥0t\geq0t≥0.

a.

Find the first positive time at which the particle is instantaneously at rest.

[2]
b.

Find the magnitude of the acceleration at this time.

[2]
c.

Find the distance travelled in the interval 0≤t≤50\leq t\leq50≤t≤5.

[3]
Markscheme

3 Mechanics Questions

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

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