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.
NASA astronaut Mae Jemison flew on space shuttle Endeavour in September 1992, becoming the first black woman to travel to space. Credit: NASA. View full size image. Early life. Born in Decatur, Ala., on Oct. 17, 1956, Mae Carol Jemison moved to Chicago, Ill., at the age of 3 and considers the city her hometown.