Table of Contents
- 1 What is it called when air resistance and gravity equal?
- 2 What term describes motion without air resistance to gravity?
- 3 How does air resistance relate to gravity?
- 4 How do you explain air resistance?
- 5 What is an example of air resistance?
- 6 How is air resistance related to vertical motion?
- 7 How is the drag force related to air resistance?
What is it called when air resistance and gravity equal?
Terminal velocity is reached when the force due to air resistance (upward) equals the force due to gravity (downward). At terminal velocity there is no net force and therefore no further acceleration.
What term describes motion without air resistance to gravity?
Free Fall Motion As learned in an earlier unit, free fall is a special type of motion in which the only force acting upon an object is gravity. Objects that are said to be undergoing free fall, are not encountering a significant force of air resistance; they are falling under the sole influence of gravity.
How does air resistance relate to gravity?
With air resistance, acceleration throughout a fall gets less than gravity (g) because air resistance affects the movement of the falling object by slowing it down. How much it slows the object down depends on the surface area of the object and its speed.
What is it called when air resistance?
In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid.
How do you reduce air resistance?
Drag is mentioned. Two ways to reduce air resistance are stated: reducing the area in contact with air (by the cyclist ducking down or cycling behind someone else) and by being more streamlined (wearing smoother surfaces or a more streamlined helmet).
How do you explain air resistance?
Translation: Air resistance is a force that is caused by air. The force acts in the opposite direction to an object moving through the air. A lorry with a flat front will experience high air resistance while a sports car with a streamlined shape will experience lower air resistance, allowing the car to go faster.
What is an example of air resistance?
Air resistance is a type of friction between air and another material. For example, when an aeroplane flies through the air, air particles hit the aeroplane making it more difficult for it to move through the air. It’s the same for an object moving through water.
The coffee filters you dropped are pulled down by gravity. Air resistance (drag) is resisting this motion as shown in Diagram 1. The forces in the free body diagram are plugged into Newton’s second law, ΣF = ma, where F is force in newtons, m is mass in kilograms, and a is acceleration in meters-per-square-second.
Which is a force that resists motion between two surfaces?
The force that resists motion between two surfaces that are pressed together. What is air resistance? The friction due to air molecules Examples: why a parachutist can slow down a person falling
How is air resistance related to Newtons second law?
Air resistance (drag) is resisting this motion as shown in Diagram 1. The forces in the free body diagram are plugged into Newton’s second law, ΣF = ma, where F is force in newtons, m is mass in kilograms, and a is acceleration in meters-per-square-second. When air drag is involved, acceleration is not constant!
This is not a particularly accurate model of the drag force due to air resistance (the magnitude of the drag force is typically proportion to the square of the speed–see Section 3.3 ), but it does lead to tractable equations of motion.