3. An instrument packaged is projected vertically upwards to collect data near the top of the earths atmosphere at an altitude of 900km. (a). What initial speed is required at the earths surface for the package to reach this height? (b). What percentage of the escape speed is this initial speed? 23:50

3. An instrument packaged is projected vertically upwards to collect data near the top of the earths atmosphere at an altitude of 900km. (a). What initial speed is required at the earths surface for the package to reach this height? (b). What percentage of the escape speed is this initial speed? 23:50