Homework Help: science

Posted by Anonymous on Friday, October 5, 2012 at 10:53pm.

determine the period of motion when a ball dropped from a height of 4.40m makes a perfectly elastic collsion with the ground without any mechanical energy lost

science - bobpursley, Friday, October 5, 2012 at 11:17pm
figure the time it takes to fall

h=1/2 g t^2
t=sqrt(2*4.4/9.8)

so the period is going up, and down, so

period=2t

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