Tuesday
September 23, 2014

Homework Help: physics

Posted by blair on Thursday, October 8, 2009 at 7:03pm.

A student throws a set of keys vertically upward to her sorority sister, who is in a window 4.30 m above. The keys are caught 1.30 s later by the sister's outstretched hand.
(a) With what initial velocity were the keys thrown?
_____________ m/s upward

(b) What was the velocity of the keys just before they were caught?
___________ m/s upward or downward


Can someone help me set up ?Or explain it please. Thank you!

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