Angular momentum.
Where do objects get their energy?
Most energy on Earth comes from the Sun, in the form of radiation.
What determines the strength of gravity?
The amount of mass determines the strength of gravity.
How does Newton's law of gravity extend Kepler's laws?
Newton showed that two objects orbit their center of mass, he showed that orbits can be unbound and he proved that any object orbiting another object obeys Kepler's first two laws is a consequence of conservation of angular momentum.
How do gravity and energy allow us to understand orbits?
Gravity determines orbit, and an objects orbit will not change unless it gains or loses orbital energy.
How does gravity cause tides?
The moon's gravitational pull on Earth's oceans causes tides.
Write down Newton's formula for the force of gravity.
25038.72 mph.
What is Sun's escape velocity?
1381600.8 mph.
What is Jupiter's escape velocity?
133018.2 mph.
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