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Physics 17 Online
OpenStudy (anonymous):

If a stone dropped into a well reaches the water's surface after 3.0 seconds, how far did the stone drop before hitting the water?

OpenStudy (ash2326):

@davidsucks123 do you know equation of motion, which relate distance to time and acceleration?

OpenStudy (anonymous):

i do not /:

OpenStudy (ash2326):

OK, The equation is \[S= ut+\frac 12 a t^2\] S= distance in meters u=initial velocity in m/s a= acceleration in m/s^2 t= seconds

OpenStudy (ash2326):

Ok, What's the value of u ? or initial velocity of stone?

OpenStudy (anonymous):

u is zero

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