The front brakes vs rear brakes comparison has everything to do with friction and heat. From a physics standpoint, the brakes on your car are designed to convert the kinetic energy of your moving vehicle into heat energy, via friction. The result of that energy conversion is what brings your car to a stop.
Mae C. Jemison is the first African-American female astronaut. In 1992, she flew into space aboard the Endeavour, becoming the first African-American woman in space.
Around the Web. Mae Jemison-Official site of Dr. Mae Jemison. Mae Jemison-Wikipedia, the free encyclopedia. Mae C. Jemison Biography-Facts, Birthday, Life Story-Biography ... Astronaut Bio:Mae C. Jemison-Johnson Space Center-NASA.