Question

1) Two celestial objects are in space: one with a mass of 8.22 x 109 kg and one with a mass of 1.38 x 108 kg. If they are separated by a distance of 1.43 km, what is the magnitude of the force of attraction (in newtons) between the objects? Round to the nearest integer.

2) If the planet Mars has a radius of 3.396 x 106 meters and a mass of 6.42 x 1023 kg, what will its free-fall acceleration near its surface be? Round to the nearest hundredth (0.01).

3) A military surveillance satellite is in circular orbit around the Earth at an altitude of 700 km above the surface. If the Earth's mass is 5.97 x 1024 kg and its radius is 6,370 km, what is the satellite's orbital speed in m/s? Round to the nearest integer.

Answer 1