Posted by
**vonne** on
.

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)