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.
Jemison did well in high school, and attended Stanford University on scholarship at the age of 16. There, she attained her Bachelor of Science in Chemical Engineering and a Bachelor of Arts in African and African-American studies. She went on to earn her doctorate in medicine from Cornell University in 1981.