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Force and motion: F = m × a

ASP written lesson, 10 min read. ASP Domain 1: Mathematical Calculations

AI-drafted from the cited rules and fact-checked against them. Study aid, not site-specific safety advice. The official rule controls.

What you'll learn

  • State Newton's second law for a constant mass as F = m × a
  • Name the units of force, mass and acceleration and keep them consistent
  • Apply the velocity-change form F = m × (v1 − v0) ÷ (t1 − t0)
  • Calculate an average deceleration force and read its sign
  • Explain how stopping time changes the force on a stopping object

What this lesson covers

This lesson teaches Newton's second law, F = m × a, and its velocity-change form, and shows how to turn a mass, a speed change and a stopping time into a force. The exam tests this math directly, and on the job it explains why a longer, gentler stop means a smaller force.

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