* Mass and Shape of the Object: Heavier objects and objects with a larger surface area experience more air resistance, which slows them down.
* Air Density: Thinner air (like at higher altitudes) allows objects to reach higher terminal velocities.
* Orientation: The way an object is oriented affects its air resistance. For example, a skydiver can change their terminal velocity by spreading their arms and legs.
Here's how terminal velocity works:
1. Gravity: As an object falls, gravity pulls it downward, causing it to accelerate.
2. Air Resistance: As the object gains speed, it encounters increasing air resistance (drag) which opposes its motion.
3. Equilibrium: At some point, the force of gravity pulling the object down will equal the force of air resistance pushing it upward. This is when the object stops accelerating and reaches its terminal velocity.
Example:
* A skydiver in a belly-to-earth position typically reaches a terminal velocity of around 120 mph (193 km/h).
* A skydiver in a head-down position can reach a terminal velocity of over 200 mph (322 km/h).
Important Note: In a vacuum (no air resistance), an object would continue to accelerate indefinitely due to gravity.
