Inertia (AQA GCSE Physics Combined Science): Flashcards

Objects keep doing what they're doing unless force applied

Stay still unless pushed or pulled

Keep moving at same speed & direction unless force acts

How hard it is to change how something moves

Tougher to speed up, slow down, or change direction

$m = \frac{F}{a}$

Bigger things need more force to change movement

Trolley - smaller inertial mass

Car has bigger inertial mass

Light object speeds up more

Need to push harder than lighter object