1 kg weight in newtons on Earth (g=10).

## The reasoning **Weight is a force, not the same as mass!** This is the key principle here. The formula connecting them is: **Weight (W) = mass (m) × gravity (g)** Given: - Mass = 1 kg - g on Earth = 10 m/s² So: W = 1 kg × 10 m/s² = **10 N** Notice the units: kg × m/s² = N (Newton). Weight is always measured in Newtons because it's a force! ## Why the wrong options tempt you **A) 1 N** — You probably just copied the mass value, forgetting to multiply by gravity. Easy mistake when rushing! **C) 100 N** — You might have multiplied 10 × 10, perhaps confusing this with a different calculation. **D) 1000 N** — Way off! Maybe you thought "1 kg = 1000 g" and mixed up mass units with force. ## Quick takeaway **"Mass tells you HOW MUCH stuff; weight tells you HOW HARD gravity pulls it."** Always multiply mass by g (10 m/s² on Earth) to get weight in Newtons. One sentence to remember: *1 kg weighs 10 N on Earth.*