At 45° latitude, the gravitational acceleration as a func- tion of elevation z above sea level is given by g = a - bz, 3.32x 10-6 s-2. determine object will 1-8 nhill con- 9.807 m/s2 and b where a the height above sea level where the weight of an decrease by 0.3 percent. peri- 8862 m its.