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The acceleration due to gravity is approximately 9.8 m/s².
In a vacuum, all objects have a free fall acceleration of exactly 9.8 m/s².
Air resistance is a form of friction.
A skydiver initially accelerates downwards at 9.8 m/s².
Terminal velocity is the highest velocity attained by an object as it falls through air.
At terminal velocity, the forces of gravity and air resistance are unbalanced.
The terminal velocity of a skydiver with arms outstretched is higher than when they are streamlined.
A parachute decreases the terminal velocity of a skydiver.
In the absence of air resistance, all objects fall at different rates depending on their masses.
The terminal velocity of a typical skydiver is approximately 80 m/s.