Posted by **vonne** on Thursday, September 16, 2010 at 9:15pm.

To find the height of an overhead power line, you throw a ball straight upward. The ball passes the line on the way up after 0.65 s, and passes it again on the way down 1.9 s after it was tossed.

(a) What is the height of the power line? (m)

(b) What is the initial speed of the ball? (m/s)

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