- #1
brunettegurl
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final velocity of a ball pushed by compressed air..pls. help!
Compressed air is used to fire a 1.72 kg ball vertically upward from a 1.50 m long
tube. The air exerts a upward force of 28.7 N on the ball as long as it is in the tube.
With what velocity does the ball leave the top of the tube?
F=ma
V12 = v02+2ad
so i used the given mass and force to get an acceleration. then using the acceleration i plugged it into the second equation assuming vinitial to be zero and my asnwer is coming out wrong can someone point me in the right direction thanks![Jaw Drop :)) :))](/styles/physicsforums/xenforo/smilies/jawdrop.png)
Homework Statement
Compressed air is used to fire a 1.72 kg ball vertically upward from a 1.50 m long
tube. The air exerts a upward force of 28.7 N on the ball as long as it is in the tube.
With what velocity does the ball leave the top of the tube?
Homework Equations
F=ma
V12 = v02+2ad
The Attempt at a Solution
so i used the given mass and force to get an acceleration. then using the acceleration i plugged it into the second equation assuming vinitial to be zero and my asnwer is coming out wrong can someone point me in the right direction thanks
![Jaw Drop :)) :))](/styles/physicsforums/xenforo/smilies/jawdrop.png)