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Constant Acceleration

Constant Acceleration

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Question 88

A car starts from rest and accelerates at a constant rate to the speed of V m s−1V\text{ m s}^{-1}V m s−1 in 6 seconds. The car maintains this speed for k k\,k seconds before decelerating to rest. The magnitude of the deceleration is 1.5 times the magnitude of the acceleration.

a.

show the total time taken for the journey is (k+10)(k+10)(k+10) seconds.

[3]
b.

sketch a velocity-time graph for this information.

[3]
c.

Given the total distance is 1320 m, find the value of V V\,V in terms of kkk.

[3]
Markscheme

Constant Acceleration Questions

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

197 exam-style questions on Edexcel A Level Maths Constant Acceleration, covering 8.2 Modelling Assumptions, 8.3 Quantities and Units, 8.4 Working with Vectors, 9.1 Displacement-Time Graphs, 9.2 Velocity-Time Graphs, 9.3 Constant Acceleration Formulae 1, 9.4 Constant Acceleration Formulae 2, and 9.5 Vertical Motion Under Gravity. Each one has a worked solution and a mark scheme showing where the marks go.

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