A baseball is seen to pass upward by a window 24 m above the street with a vertical speed of 9 m/s. The ball was thrown from the street.(adsbygoogle = window.adsbygoogle || []).push({});

(a) What was its initial speed?

m/s ( I keep getting 26 what equation am I supposed to use?)

(b) What altitude does it reach?

m (I dont know what equation I am supposed to use)

(c) How long ago was it thrown?

s (I need an equation because I got a negative number.) :yuck:

(d) After how many more seconds does it reach the street again?

s (Once again Im not sure what equation I am supposed to use!)

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# Homework Help: Initial speed physics problem

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