Paper 4 October/November 2010 MATHEMATICS (9709/42) A Levels
لطفا برای اطمینان از عملکرد و تجربه بهتر از مرورگرهای مدرن و به روز مانند کروم یا فایرفاکس استفاده کنید.

A walker travels along a straight road passing through the points $A$ and $B$ on the road with speeds $0.9{\text{ }}m{\text{ }}{s^{ - 1}}$ and $1.3{\text{ }}m{\text{ }}{s^{ - 1}}$ respectively. The walker’s acceleration between $A$ and $B$ is constant and equal to $0.004{\text{ }}m{\text{ }}{s^{ - 2}}$.
a) Find the time taken by the walker to travel from $A$ to $B$, and find the distance $AB$.
A cyclist leaves $A$ at the same instant as the walker.…