Paper 5 October/November 2011 MATHEMATICS (9709/53) A Levels
لطفا برای اطمینان از عملکرد و تجربه بهتر از مرورگرهای مدرن و به روز مانند کروم یا فایرفاکس استفاده کنید.

A car of mass $600{\text{ }}kg$ travels along a straight horizontal road starting from a point $A$. The resistance to motion of the car is $750{\text{ }}N$.
a) The car travels from $A$ to $B$ at constant speed in $100{\text{ }}s$. The power supplied by the car’s engine is constant and equal to $30{\text{ }}kW$. Find the distance $AB$.
b) The car’s engine is switched off at $B$ and the car’s speed decreases until the car reaches $C$ with a speed of $20{\text{…