Rock a is thrown vertically downward with initial speed 4.3m/s and reaches the ground in .95 s. Rock b is

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Rock a is thrown vertically downward with initial speed 4.3m/s and reaches the ground in .95 s. Rock b is

[From: ] [author: ] [Date: 11-06-05] [Hit: ]

thank you for explaining :)-The equation y - y0= vt + at^2 would be appropriate for this situation. First, (knowing time t, initial velocity v, and acceleration (Earths gravity) a) calculate y- y0Use the data given for rock b as well as the calculated displacement to solve for the fall time.-Did you remember to use the quadratic formula to solve for the fall time (the equation is quadratic after all)?......

released from rest at the same initial height as rock A. How long does it take for rock B to reach to ground?
I am confused as to what formula to use? thank you for explaining :)

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The equation y - y0= vt + at^2 would be appropriate for this situation. First, (knowing time t, initial velocity v, and acceleration (Earth's gravity) a) calculate y- y0Use the data given for rock b as well as the calculated displacement to solve for the fall time.

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Did you remember to use the quadratic formula to solve for the fall time (the equation is quadratic after all)?

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