Homework Help: physics

Posted by Kristin on Thursday, January 21, 2010 at 12:04am.

A tennis ball is dropped from the top of a building. It falls for 2.5 seconds before it hits the ground. (a) What velocity is the tennis ball traveling right before it hits the ground? (b) How high is the building?

physics - drwls, Thursday, January 21, 2010 at 2:27am
Try using the formulas
V = gt and
Y = (1/2) g t^2

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