Force (Grade 11 NSC Matric Physical Sciences): Flashcards

Anything that can cause a change to objects

Vector (magnitude & direction); SI unit: newton (N)

Change shape, accelerate/stop, change direction

Must touch object to cause a change

Acts at distance without physical contact

Force by surface on object in contact with it

Always perpendicular to the surface

Opposes motion, acts parallel to surface

Static: not moving; Kinetic: moving

$f_{s,max} = \mu_s N$