SI unit of force.

**The reasoning** Force is defined as **mass × acceleration** (F = ma). In the SI system: - Mass is measured in kilograms (kg) - Acceleration is measured in meters per second squared (m/s²) So force = kg × m/s² = **Newton (N)** The unit is named after Sir Isaac Newton, who gave us the laws of motion. When you push a 1 kg object with an acceleration of 1 m/s², you're applying exactly 1 Newton of force. Simple as that! **Why the wrong options tempt you** All these options are SI units, which is the trap: - **Joule** measures *energy* or *work done* (force × distance) - **Watt** measures *power* (energy per time) - **Pascal** measures *pressure* (force per area) They're related to force but aren't force itself. JAMB loves testing if you can distinguish between related quantities. **Quick takeaway** Think "**N** for **N**ewton = Force" — if you're pushing, pulling, or weighing something, you're dealing with Newtons! 💪