1. You want to launch a satellite into a circular orbit at an altitude of 16,000 km (above Earth's surface). What launch speed will be required?
A: 1.0 x 10^4 m/s
2. In a joint international effort, two rockets are launched from Earth's surface. One has an initial velocity of 13 km/s and the other 19 km/s. How fast is each moving when it crosses the Moon's orbit (3.84 x 10^8 m)?
6.8 km/s; 15 km/s
3. A 460 kg satellite is launched into a circular orbit and attains an orbital altitude of 850 km above Earth's surface. Calculate the additional energy and speed required for the satellite to escape.
2.2 x 10^9 J; 3.1 km/s