At terminal velocity the gravitational force down equals the air resistance force up.
vehicle stopping distance depends on the speed squared.
moment = force × perpendicular distance from pivot
weight of a body acts through its centre of gravity
principle of moments: in equalibrium clockwise moments equal anticlockwise
Hooke’s law: the force is proportional to the extension
True for the initial linear region of a force - extension graph
pressure = force / Area unit: (P) Pascal
pressure at a point in a gas or liquid acts equally in all directions
pressure in a liquid = height × density × g
p = h× ρ × g