0 Time in seconds 9. A board is placed on a pair of scales and the scales are adjusted so that each scale has a reading of zero. Then a car is placed on the board and the readings of the scales are 200 newtons and 300 newtons. as shown. How far is the center of mass of the car from the right end of the board? 200 N 300 N 7.5 m 2.5 m 10. A ball is released from rest and falls a distance of 900 meters. Neglect air resistance