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3 Mechanics

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Question 29

The displacement of a particle is s=(2t3−9t2+12t) ms=(2t^3-9t^2+12t)\text{ m}s=(2t3−9t2+12t) m at time t t\,t seconds.

a.

Show that the particle is instantaneously at rest when t=2t=2t=2.

[2]
b.

Find its acceleration at this instant.

[2]
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3 Mechanics Questions

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

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