Force And Motion

Front 1

What is an inertial frame of reference?

Back 1

• where Newton's Laws hold
• object moves with constant velocity relative to the inertial frame
• any reference frame moving with constant velocity relative to an inertial frame is itself an inertial frame
• v(p/a) = v(p/b) + v(p/a)
  

Front 2

What is a non-inertial frame?

Back 2

Both the body and frame of reference are accelerating

Front 3

The 3 conditions of friction

Back 3

1. body doesn't move → static frictional f has equal magnitude + opposite direction to pushing F component
   
2. f(max) = μN
   
3. body begins to move along the surface → f(k) = μ(k) N where μ(k) = kinetic friction coefficient
   

Front 4

Drag force

Back 4

C = drag coefficient + determined experimentally