Question: What is the formula for calculating the gravitational force between two masses?

Options:

1. F = ma
2. F = G(m1*m2)/r^2
3. F = mv^2/r
4. F = qE

Correct Answer: F = G(m1*m2)/r^2

Solution:

The gravitational force between two masses is given by Newton\'s law of universal gravitation: F = G(m1*m2)/r^2, where G is the gravitational constant.