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March 2, 2015

Homework Help: calculus HELP!

Posted by Danielle on Wednesday, November 6, 2013 at 9:45pm.

A person stands on a bridge that is 100 feet above a river.

If she drops a pebble how fast is it moving after 2 seconds?
How long does it take the pebble to reach the river below?
She has another pebble that she tosses up with initial speed of 8 feet per second. It goes up, then starts falling down to the river below. By the time it reaches the river what is its speed?

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