calculating

Let's say we have a 5lb metal ball. Traveling at 500mph. K = ½mv2 How would i do that? K=1/2 of 2500 2 K=1250 2 K=1 953 125 000 ??? Would the answer be 1953125000 joules? I would get a different answer using Kilometers per hour though,So that can't be right. What is the correct way of...

We all know that just about every year, some psychic, some where, via some method of communication predicts the death of Pope John Paul II or alternately just "The Pope." Currently, as of 1:10PM PST, Pope John Paul II's kidneys and other organs are failing. It seemse very likely that he'll...

I've seen some of the interesting summations to calculate the value of pi, but it occurred to me that it would be much easier to calculate pi by finding the area under the curve sqrt(1-x^2) as x goes from -1 to 1, then multiplying the value by 2 (to get the other half of the circle, of course)...