1. Near the Earth's surface, g ≈ 9.8N/kg. Which of the following statements about this constant is correct?
- A. 1kg equals 9.8N
- B. An object with a mass of 1kg experiences a gravitational force of 9.8N
- C. An object has a mass of 1kg only when its gravity is 9.8N
- D. It is equal everywhere in the universe