E-Learning: Sky Diving Explained
Description
Vocal Characteristics
Language
EnglishVoice Age
Young Adult (18-35)Accents
North American (General)Transcript
Note: Transcripts are generated using speech recognition software and may contain errors.
Have you ever thought about going skydiving? Watching a sky diver in action could help us to understand how the motion of an object changes when falling. As the skydiver leaves the plane and enters free fall, two forces are immediately at work. The force of gravity pulls the skydiver down. At the same time, air resistance pushes upward against the sky. Ida. The force of gravity is greater than the force of air resistance, causing the skydiver to accelerate. As the skydiver continues to fall, Air resistance continues to push upwards and increases as the speed of the skydiver increases. When the upward force of air resistance is equal to the downward force of gravity, the skydiver stops accelerating and travels at a constant speed. This is called terminal velocity. Opening their parachute increases air resistance to the point where the upward force is greater than the downward force forces air now unbalanced. Because the air resistance is greater than the force of gravity, the skydiver slows down as the sky diver slows down. Air resistance slowly decreases until the force of the air resistance is equal to the force of gravity Again. At this point, the forces are balanced. This is a new and decreased terminal velocity. The skydiver will fall to the ground at this slower speed.