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## Homework Statement

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 0.70 s, and passes it again on the way down 1.2 s after it was tossed

What is the height of the power line?

m

What is the initial speed of the ball?

m/s

I have just started spring term physics and was doing okay on this homework assignment till i got to this last problem. I am guessing that the force of gravity will play a role, but am stuck at where to start

Thanks so much