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Variable Acceleration

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Question 173

A particle P P\,P travels along a straight line through a point O O\,O so that at time t t\,t s after passing through O O\,O its displacement from O O\,O is x x\,x m, where x=t3+at2+btx = t^3 + at^2 + btx=t3+at2+bt and a a\,a and b b\,b are constants.

a.

The initial velocity of P P\,P is 74 ms-1.

Find the value of bbb.

[3]
b.

The particle P P\,P has zero acceleration when t=6t = 6t=6.

Find the value of aaa.

[2]
Markscheme

Variable Acceleration Questions

  1. A Level
  2. /Maths
  3. /Variable Acceleration

308 exam-style questions on Edexcel A Level Maths Variable Acceleration, covering 11.1 Functions of Time, 11.2 Using Differentiation, 11.3 Maxima and Minima Problems, 11.4 Using Integration, and 11.5 Constant Acceleration Formulae. Each one has a worked solution and a mark scheme showing where the marks go.

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