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.
Mae Jemison Timeline Timeline Description: Mae Jemison was the first black woman to become an astronaut. She overcame hardships and fears to realize her dreams. This is a timeline of her life. Date Event October 17, 1956 Mae Jemison is born Mae was born in Decatur, AL. 1959 The family moves away Mae's family moved to Chicago, IL, so the children could have a better education. Mae had a brother and a sister.