4.5.7.3 Changes in momentum (HT only)

Spec reference: 4.5.7.3 (physics only) (HT only).

Triple-only content in this dot

• Force equals rate of change of momentum.
• Explain safety features by increasing collision time to reduce force.

Exam quick-check

• Can I identify this as a triple-only point from wording in the question?
• Can I apply the correct equation/idea with units and a clear conclusion?