Sally Ride was the first female US astronaut to travel into space on the Challenger. On that same mission, she also became the first female to do what? six consecutive somersaults inside a spacecraft
walk on the top of the space craft with no space shoes
promote Soviet science and eventually became involved in Soviet politics
operate the shuttle’s robotic arm during her work on launching the satellites

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.