SOLUTION: What is the velocity of a bullet? 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 sec

Algebra ->  Linear-equations -> SOLUTION: What is the velocity of a bullet? 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 sec      Log On


   



Question 115060: What is the velocity of a bullet?
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?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
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.