Trying to find out the kinetic energy that a 1kg ball gives the earth if dropped from 100 ft. I just don't know how to square a negative exponent. 4x10^-24 squared is? I was thinking it would be 4x10^-48, but I really don't know. If that is correct, would the result be different if the exponent was an odd number? Like 4x10^-23 squared?