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Physics 6 Online
OpenStudy (anonymous):

how long does it take a 100g ball to fall 10m given an initial x velocity of 20 m/s

OpenStudy (anonymous):

|dw:1384752231514:dw|

OpenStudy (anonymous):

This is a mean question, because they give a bunch of info that you don't need! ^_^ What's the initial velocity in the y direction?

OpenStudy (anonymous):

\[v_{iy} = ?\]

OpenStudy (anonymous):

In any case, the acceleration in the y direction is gravity, \[g=-9.81m/s^2\] and the displacement in the y direction is \[s=-10m\] so all you need is the first equation of motion \[s=v_{iy}t+\frac{1}{2}at^2\] REMEMBER!! The x velocity is NOT equal to the y velocity \[v_{ix} ≠ v_{iy}\]

OpenStudy (anonymous):

so Viy is 0?

OpenStudy (anonymous):

yeah. Sorry, notifications are down :(

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