Newton’s Laws and Friction (HSC SSCE Physics): Flashcards

Continues with constant velocity (no external forces)

$a = \frac{F_{\text{net}}}{m}$

Contact force parallel to surface, opposes relative motion

Adjusts to match applied force up to maximum value

$F_{\text{max}} = \mu_s F_N$

$F_k = \mu_k F_N$

$\mu_s > \mu_k$ always

Static friction between tyres and road

$a_{\text{max}} = \mu_s g$

Proportional to $v^2$ (square of speed)