Newton's second law (particle) (ΣF = ma)
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ΣF = ma
What each symbol means
| Symbol | What it stands for |
|---|---|
| a | Acceleration (m/s²) |
| m | Mass (kg) |
| ΣF | Net external force (N) |
When to use this
In an inertial frame, net external force equals mass times acceleration. Use consistent unit system.