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2.2 Kinematics

2.2 Kinematics

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Question 53

A marine salvage ROV (Remotely Operated Vehicle) of mass 2.5 kg is operating at depth. Its motion is governed by two horizontal thruster forces P1\mathbf{P}_1P1​ and P2\mathbf{P}_2P2​ such that:

P1=(3a−11) N and P2=(52b) N \mathbf{P}_1 = \begin{pmatrix} 3a \\ -11 \end{pmatrix} \text{ N and } \mathbf{P}_2 = \begin{pmatrix} 5 \\ 2b \end{pmatrix} \text{ N} P1​=(3a−11​) N and P2​=(52b​) N

where a a\,a and b b\,b are constant parameters. The resulting acceleration of the ROV is observed to be a=(2ba−1) m s−2\mathbf{a} = \begin{pmatrix} 2b \\ a - 1 \end{pmatrix} \text{ m s}^{-2}a=(2ba−1​) m s−2.

Determine the value of a a\,a and the value of bbb.

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Markscheme

2.2 Kinematics Questions

  1. A Level
  2. /Maths
  3. /2.2 Kinematics

85 exam-style questions on CCEA A Level Maths 2.2 Kinematics, covering 2.2.1 Kinematics, 2.2.2 Kinematics, 2.2.3 Kinematics, and 2.2.4 Kinematics. Each one has a worked solution and a mark scheme showing where the marks go.

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