
#1
Aug3006, 08:22 PM

P: 46

Ball bearings are made by letting spherical drops of molten metal fall inside a tall tower called a shot tower and solidify as they fall.
If a bearing needs 4.50 to solidify enough for impact, how high must the tower be? What is the bearing's impact speed? I got the answer for the first part correct it was 99.2 d=.5*9.8*4.5^2=99.2 but I am not sure how to approach the second part..... What is the bearing's impact speed? I search all over but couldn't find an equation could someone help me with that. All I need is the equation.....thank you 



#2
Aug3006, 08:28 PM

HW Helper
P: 661

Look for the kinematics equations. Given all the information you have, you actually have a choice on the equation you want to use.
How about the intuitive: final velocity = initial velocity + (acceleration x time) 



#3
Aug3106, 02:56 AM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 38,879




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