#1. Good question,and still unresolved.
Newton said it is a force between two masses
Einstein said is is our perception of the curvature of space-time
#1. F = GMm/d^2
so affected by mass and distance
#4. It is so far away
#5. The balls would hit the ground at the same time.
weight does not affect acceleration, so both balls fall at the same speed.
#3. False premise. They both pull on each other
1. What is gravity?
2. Gravity is affected by two main factors. What are they?
3. Why does the Earth pull on the Moon instead of the other way around?
4. Why does Jupiter not have a very strong pull on the Earth?
5. According to Galileo, what would happen if you drop a 5 and 10 pound ball at the same time from the Leaning Tower of Pisa? Why?
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