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what two principal factors affect the force of air resistance on a falling object

by Brenda Pfannerstill Published 3 years ago Updated 3 years ago

When air resistance acts, acceleration during a fall will be less than g because air resistance affects the motion of the falling objects by slowing it down. Air resistance depends on two important factors - the speed of the object and its surface area. Increasing the surface area of an object decreases its speed.

What two principal factors affect the force of air resistance on a falling object? First, it depends on the frontal area of the falling object that is, on the amount of air the object must plow through as it falls. Second, it depends on the speed of the falling object.

Full Answer

What are the net forces of air resistance on falling objects?

The net forces are 6 N and 0 N, respectively. What two principal factors affect the force of air resistance on a falling object? The force depends mostly on frontal area and speed. What is the acceleration of a falling object that has reached its terminal velocity?

What factors affect the amount of air resistance?

To keep the topic simple, it can be said that the two most common factors that have a direct effect upon the amount of air resistance are the speed of the object and the cross-sectional area of the object. Increased speeds result in an increased amount of air resistance.

How much air resistance does an object experience?

The amount of air resistance an object experiences depends on its speed, its cross-sectional area, its shape and the density of the air. Air densities vary with altitude, temperature and humidity. Nonetheless, 1.29 kg/m 3 is a very reasonable value. The shape of an object affects the drag coefficient (C d).

What happens when an object falls through the air?

Falling with Air Resistance As an object falls through air, it usually encounters some degree of air resistance. Air resistance is the result of collisions of the object's leading surface with air molecules. The actual amount of air resistance encountered by the object is dependent upon a variety of factors.

What principal factors affect the force of air drag on a falling object?

What two principal factors affect the force of air resistance on a falling object? The force depends mostly on frontal area and speed.

What two factors act on falling objects?

Then we have a more complicated problem, because there are now TWO forces on the falling object. There is the gravitational force (see all the stuff above), and there is also an air resistance force. As an object moves through the air, there is a force pushing in the opposite direction of motion.Sep 6, 2018

What factors affect falling objects?

The factors affecting the terminal velocity of an object include:
  • its mass.
  • its surface area.
  • the acceleration due to gravity , g.

What effect does air resistance have on falling objects?

When air resistance acts, acceleration during a fall will be less than g because air resistance affects the motion of the falling objects by slowing it down. Air resistance depends on two important factors - the speed of the object and its surface area. Increasing the surface area of an object decreases its speed.Sep 30, 2021

What causes air resistance?

What Causes Air Resistance? Also known as 'drag,' air resistance is a force caused by air. The air particles hit the front of an object, causing it to slow down. The greater the surface area, the greater the number of air particles hit the object and the greater the overall resistance.

Is air resistance a force?

The air resistance is a special type of frictional force that acts upon objects as they travel through the air. The force of air resistance is often observed to oppose the motion of an object.

What three factors affect the amount of air resistance on an object?

The amount of air resistance an object experiences depends on its speed, its cross-sectional area, its shape and the density of the air.

How do you find the air resistance of a falling object?

  1. An object that is falling through the atmosphere is subjected to two external forces. The first force is the gravitational force, expressed as the weight of the object, and the second force is the aerodynamic drag of the object. ...
  2. W = m * g. ...
  3. D = Cd * .5 * r * V^2 * A. ...
  4. F = m * a. ...
  5. a = F / m. ...
  6. F = W - D. ...
  7. a = (W - D) / m.

How does air resistance affect projectile motion?

As a projectile moves through the air it is slowed down by air resistance. Air resistance will decrease the horizontal component of a projectile. The effect of air resistance is very small, but needs to be considered if you want to increase the horizontal component of a projectile.

What is the effect of air resistance on the acceleration of falling objects quizlet?

How does air resistance affect the acceleration of falling objects? Air resistance slows the acceleration of falling objects. An object falls at its terminal velocity when the upward force of air resistance equals the downward force of gravity.

Why would air resistance slow down an object as it falls?

Q: Why does air resistance slow things down? 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.

Why air offers resistance to the motion of an object?

By definition, air resistance describes the forces that are in opposition to the relative motion of an object as it passes through the air. These drag forces act opposite to the oncoming flow velocity, thus slowing the object down.May 17, 2016

What are the two factors that affect air resistance?

To keep the topic simple, it can be said that the two most common factors that have a direct effect upon the amount of air resistance are the speed of the object and the cross-sectional area of the object. Increased speeds result in an increased amount of air resistance.

What happens when an object falls through air?

As an object falls through air, it usually encounters some degree of air resistance. Air resistance is the result of collisions of the object's leading surface with air molecules. The actual amount of air resistance encountered by the object is dependent upon a variety of factors.

What happens when an object falls?

As an object falls, it picks up speed. The increase in speed leads to an increase in the amount of air resistance. Eventually, the force of air resistance becomes large enough to balances the force of gravity. At this instant in time, the net force is 0 Newton; the object will stop accelerating.

What is the strength of the gravitational field?

The gravitational field strength is a property of the location within Earth's gravitational field and not a property of the baby elephant nor the mouse. All objects placed upon Earth's surface will experience this amount of force (9.8 N) upon every 1 kilogram of mass within the object. Being a property of the location within Earth's gravitational ...

What would happen if Newton's second law were applied to their falling motion?

If Newton's second law were applied to their falling motion, and if a free-body diagram were constructed, then it would be seen that the 1000-kg baby elephant would experiences a greater force of gravity. This greater force of gravity would have a direct effect upon the elephant's acceleration; thus, based on force alone, ...

What is free fall motion?

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. Under such conditions, all objects will ...

Does a 1000 kg elephant have more mass?

The 1000-kg baby elephant obviously has more mass (or inertia). This increased mass has an inverse effect upon the elephant's acceleration. And thus, the direct effect of greater force on the 1000-kg elephant is offset by the inverse effect of the greater mass of the 1000-kg elephant; and so each object accelerates at the same rate - approximately ...

What is the force that falls through the atmosphere?

An object that is falling through the atmosphere is subjected to two external forces. The first force is the gravitational force, expressed as the weight of the object, and the second force is the aerodynamic drag of the object. The weight equation defines the weight W to be equal to the mass m of the object times the gravitational acceleration g :

What is the net external force of weight and drag?

Weight and drag are forces which are vector quantities. The net external force is then equal to the difference of the weight and the drag forces: F = W - D. The acceleration of the object then becomes: a = (W - D) / m. The drag force depends on the square of the velocity.

When the drag is equal to the weight, the acceleration becomes zero?

It quickly reaches a point where the drag is exactly equal to the weight. When drag is equal to weight, there is no net external force on the object, and the acceleration becomes zero.

Does gravitational acceleration decrease with distance?

The gravitational acceleration decreases with the square of the distance from the center of the earth. But for most practical problems in the atmosphere, we can assume this factor is constant. If the object were falling in a vacuum, this would be the only force acting on the object.

Why does a 20 kg rock fall faster than a 10 kg rock?

A heavy parachutist has a greater terminal speed compared with a lighter parachutist with the same size parachute because the heavier person. has to fall faster for air resistance to match weight.

Can a boxer hit a paper bag with great force?

A boxer can hit a heavy bag with great force. Why can't he hit a sheet of tissue paper in midair with the same amount of force? The low mass of the tissue paper limits the amount of force the paper can exert on the boxer, and the forces between the boxer and paper must be equal and opposite. State Newton's third law.

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