Paper 5 May/June 2004 MATHEMATICH (9709/5) A Levels
لطفا برای اطمینان از عملکرد و تجربه بهتر از مرورگرهای مدرن و به روز مانند کروم یا فایرفاکس استفاده کنید.

A lorry of mass $16000{\text{ }}kg$ climbs a straight hill $ABCD$ which makes an angle $\theta $ with the horizontal, where $\sin \theta = \frac{1}{{20}}$. For the motion from $A$ to $B$, the work done by the driving force of the lorry is $1200{\text{ }}kJ$ and the resistance to motion is constant and equal to $1240{\text{ }}N$. The speed of the lorry is $15{\text{ }}m{\text{ }}{s^{ - 1}}$ at $A$ and $12{\text{ }}m{\text{ }}{s^{ - 1}}$ at $B$.
a) Find the distance…