This contact force opposes sliding, or the tendency to slide, between surfaces.

Think it. Then flip it. ahamoraTap to reveal Back to the cue

ScienceOne small aha

Your new ahaFriction

Friction can oppose relative movement between surfaces. Source: Friction ↗

Keep the thread going

One answer is a beginning.

Share a little curiosity, or follow it into the full collection.

21This steady falling speed occurs when drag balances weight.RECALL
Terminal velocity
A falling object can approach it
Open this card ↗
22This quantity equals normal force divided by the area over which it acts.RECALL
Pressure
Measured in pascals
Open this card ↗
23This material property equals mass divided by volume.RECALL
Density
It helps explain floating and sinking
Open this card ↗