An russian spy satellite nears the end of its life due to air resistance. before it meets its demise:
it moves slower as the orbit lowers
it slowly spirals away from earth
it moves faster in the same orbit but with an increasing period
it moves slower in the same orbit but with a decreasing period
it moves faster as the orbit lowers

An astronaut on the moon throws a baseball upward. the astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 3030 ft per sec. the height s of the ball in feet is given by the equation s equals negative 2.7 t squared plus 30 t plus 6.5s=−2.7t2+30t+6.5, where t is the number of seconds after the ball was thrown. complete parts a and b.