; ; ;
Line has equation and line has equation .
You can find the point of intersection by solving . This gives you and the point of intersection is therefore .
is a constant, so the formula can be written as .
You have to assume that the pressure remains constant at all temperatures.
The domain is
Enter: Y1=1+1/273X. Window: and .
m3
gives you . Thus the temperature is °C.
is the distance covered at time , and is the speed in m/s.
. Enter: Y1=20X. Window: and .
, therefore use Y2=400+15X.
gives you
The speed at (initial speed).
and , therefore . This gives you .
gives you m/s2.
Therefore Newton. (It is a negative force because it works in the opposite direction of the
movement of the object.)