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.
In 1988 Jemison completed astronaut training, becoming the first African-American female astronaut. Jemison is the first female of color to go into space, where she conducted experiments in 1992 aboard the space shuttle.