Question: What is the gravitational force between two 10 kg masses separated by a distance of 2 meters?

Options:

1. 25 N
2. 50 N
3. 100 N
4. 20 N

Correct Answer: 50 N

Solution:

Using Newton\'s law of universal gravitation, F = G(m1*m2)/r², where G = 6.674 × 10⁻¹¹ N(m/kg)², F = (6.674 × 10⁻¹¹)(10)(10)/(2²) = 50 N.