Understanding the Concepts

* Newton (N): The unit of force.

* Mass (kg): The amount of matter in an object.

* Acceleration due to gravity (g): The acceleration experienced by objects due to Earth's gravity, approximately 9.8 m/s².

* Force (F) = Mass (m) x Acceleration (a)

Calculation

1. Rearrange the formula: We need to find mass (m), so we rearrange the formula:

m = F / a

2. Plug in the values:

* F = 980 N

* a = 9.8 m/s²

3. Calculate:

m = 980 N / 9.8 m/s²

m = 100 kg

Answer: The mass of the 980 newton boulder is 100 kg.