Momentum & Safety (AQA GCSE Physics): Flashcards
📚Flashcards
Practise the cards
13 cards from this deck
ShowHide
Practise the cards
13 cards from this deck
Effect of hard braking on passengers
Effect of hard braking on passengers
Large deceleration and large force felt
Injury caused by large force during braking
Injury caused by large force during braking
Neck whiplash
Why does large deceleration create large force?
Why does large deceleration create large force?
Large change in momentum over short time
How seatbelts help during hard braking
How seatbelts help during hard braking
Stretch to extend stopping time, reducing force
What happens without seatbelts during hard braking
What happens without seatbelts during hard braking
You fly through the windshield
How seatbelt stretching reduces force
How seatbelt stretching reduces force
Extends time, decreases rate of change of momentum
What crumple zones do during a crash
What crumple zones do during a crash
Crumple and absorb energy to deform
How crumple zones help in a crash
How crumple zones help in a crash
Increase time taken for car to stop
Effect of crumple zones on force
Effect of crumple zones on force
Reduce acceleration and force on passengers
Car without crumple zones
Car without crumple zones
Solid metal block that stops immediately
What airbags do during a crash
What airbags do during a crash
Inflate instantly, cushioning head impact
How airbags reduce injury
How airbags reduce injury
Increase time for head to stop, reducing force on neck
Danger without airbags in a crash
Danger without airbags in a crash
Head hits steering wheel or whips back