Homework Help: physics

Posted by Anonymous on Sunday, February 5, 2012 at 9:04pm.

A ball is dropped from a high building. Using the approximate value of g = 10 m/s2, find the change in velocity between the fourth and seventh second of its flight

physics - bobpursley, Sunday, February 5, 2012 at 10:53pm
find v(7) : v(7)=10*7=70
find v(4) : v(4)=10*4=40

calculate the change.
physics - Mina, Sunday, February 12, 2012 at 11:24pm
30 is the change

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