Estimating Decelerating Forces (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards

Reduction in speed or negative acceleration

Friction or air resistance

$F = \frac{m \cdot \Delta v}{\Delta t}$

Decelerating force (in Newtons)

Mass of the object (in kilograms)

Change in velocity (in metres per second)

Time over which deceleration happens (in seconds)

Heavier vehicles require more force to decelerate over same time period

Faster vehicles require greater force to stop in given time

Reduce available friction, harder to decelerate

7,200 N

Generates necessary decelerating force