<PRE><B>Question 115060</B>
if a gun is fired straight upward, the bullet leave the gun at 100 feet per second, after 2 seconds the velocity of the bullet is 36 feet per second?
there is a linear equation that give the velocity in terms of the time

Find the equation and the velocity after three seconds? 
---------------------
You have two points relating velocity to time: (0,100) and (2,36)
------------
Slope = (100-36) / (0-2) = -32
-----------------
Intercept: f(0) = 100
--------------
EQUATION:
velocity = -32 t + 100
==================
v(0)=100
----------------
v(3) = -32*3 + 100 = 4 ft. per sec.
===============
Cheers,
Stan H.
</PRE>