Asatellite orbits the earth. which changes would decrease the force of earth's gravity on the satellite? check all that apply. a. increase the velocity of the satellite b. increase the distance above earth that the satellite orbits c. remove mass from the satellite d. increase the size of the satellite

Mary starts from her house, walks 80 meters south, and stops to chat with her aunt on the sidewalk. after chatting for a few minutes, she walks 125 meters to the west to meet a friend and then walks 45 meters north with her friend to a cafe for lunch. overall, she takes 10 minutes to do all this. what is mary’s average speed?