you are carrying a 7.00kg bag at a height of 1.20m above the level floor of a 2.30m long room at a constant velocity of 0.75m/s. how much work do you do on the bag in moving across the room?​

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.