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.
Alma Mater: Stanford University. Current work: Leading the 100 Year Starship, a government-funded project to plan the next 100 years of interstellar travel. Growing up in the southside of Chicago, Mae Jemison was always curious about space. After graduating from Stanford University, she became a medical doctor and worked in Liberia and Sierra Leone as the Peace Corps medical officer.