This introduction covers Why Crumple Zones Save Lives within Impulse & Collisions for GCSE Physics. Revise Impulse & Collisions in Forces for GCSE Physics with 13 exam-style questions and 10 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 1 of 4 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 1 of 4
Practice
13 questions
Recall
10 flashcards
📖 Why Crumple Zones Save Lives
Imagine catching a cricket ball. If you catch it with rigid hands, it HURTS! But if you let your hands move backwards with the ball, it's much gentler. Why? The ball's momentum change is the same either way — but by increasing the TIME over which you stop it, you reduce the FORCE. This is impulse, and it's why cars have crumple zones, cyclists wear helmets, and gymnasts land on springy floors!
Impulse Equation (Higher Tier)
F × t = m × Δv = Δ(mv)
Impulse (N s) = Change in momentum (kg m/s)