- In this question you must show all stages of your working.
\section*{Solutions relying entirely on calculator technology are not acceptable.}
A particle \(P\) is moving along a straight line.
At time \(t\) seconds, \(P\) is a distance \(x\) metres from a fixed point \(O\) on the line and is moving away from \(O\) with speed \(\frac { 50 } { 2 x + 3 } \mathrm {~ms} ^ { - 1 }\)
- Find the deceleration of \(P\) when \(x = 12\)
Given that \(x = 4\) when \(t = 1\)
- find the value of \(t\) when \(x = 12\)