How long would a day be in seconds if the Earth were rotating so fast that objects at the equator were apparently weightless?

Answer 1

V^2/re=9.8m/s^2
solve for v, knowing the circumferance of earth, 2PI re, v= 2pi re/T, solve for T

Answer 2

making quiz for new vocabulary
fill in the back and match
? the number of orgamisims of the same speices livining in a community ....