Chapter 6 Formulas and Definitions

Final Velocity

a*t

Average Velocity

vf/2 or d/t

Distance

(a)(t^2)/2

Time

√(2d/a)

Falling Objects

On Earth, all objects will fall accelerating at 9.8m/s/s (acceleration due to gravity), assuming there is no air resistance(space or vacuum).

Air Resistance

is a force that air exerts on any moving object This force is always in the opposite direction of motion. Also, ____________________ depends on the surface area. A larger area would have more ______________________

Terminal Velocity

is when a falling object will no longer accelerate because the force of gravity pushed down and the force of air pushing up becomes balanced.

Free Fall

occurs when the only force present on the following object is gravity. The object will continue to accelerate on Earth at 9.8m/s/s unit it hits the ground or a surface (no air resistance). Objects that are in ______________ appear to be weightless because the scale would be failing also.