1. Determine the force of gravity keeping the Earth in its orbit around the sun.
2. A 222kg weather rocket reaches a maximum height of 32km above the Earths surface determine:
The amount of gravitational potential energy at its maximum height.
It’s speed when it hits the ground (neglect frictional effects).
Determine the orbital speed of the Earth.
Determine the gravitational field 300km above the surface of the earth.