# What are the 2 most common factors that have an effect of air resistance?

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.

In this way, what is an example of air resistance?

Air resistance force is the force of air pushing against a moving object. Air resistance force is a type of frictional force (refer to Chapter 5 of this unit). When you walk, for example, you are affected by air resistance force, but it does not really slow you down.

What is air resistance simple definition?

Definition: 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.

When air resistance is negligible?

Such an object would then be in free fall. Freely falling objects are solely under the influence of gravity. The acceleration of an object under conditions where air resistance is negligible is about 9.81 meters per second squared.

## Do lighter or heavier objects have more air resistance?

Another way of thinking of this is to say that gravity has to pull harder on a heavy object than a light one in order to speed them both up by the same amount. However, in the real world, we have things like air resistance, which is why sometimes heavy things do fall faster.

## Why does a projectile follows a curved path?

Describe why a projectile follows a curved path. The combination of an initial forward velocity and the downward vertical force of gravity causes the ball to follow a curved path. When the forces on an object are balanced, the net force is zero and there is no change in the objects motion.

## How does a streamline help reduce air resistance?

Racing cyclists crouch down low on their bikes to reduce the air resistance on them. This helps them to cycle faster. They also wear streamlined helmets. These have special, smooth shapes that allow the air to flow over the cyclist more easily.

## What force changes when a skydiver’s parachute opens and what force stays the same?

What force changes when a sky diver’s parachute opens? What force stays the same? Air resistance changes because falling objects with a greater surface area experience more air resistance. Gravity stays the same.

## Why do some things move and at times faster than the others?

Galileo discovered that objects that are more dense, or have more mass, fall at a faster rate than less dense objects, due to this air resistance. A feather and brick dropped together. Air resistance causes the feather to fall more slowly.

## Do heavy objects fall faster?

Heavier objects do not fall faster than lighter objects when they are dropped from a certain height IF there is no resistance from the air. So, if you were in a vacuum, the two things would fall at the same rate.

## How does the mass of an object affect air resistance?

Mass does not affect the speed of falling objects, assuming there is only gravity acting on it. The horizontal force applied does not affect the downward motion of the bullets — only gravity and friction (air resistance), which is the same for both bullets. Air resistance makes a feather fall slower.

## How is the acceleration of a falling object affected by gravity?

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. Acceleration depends on both force and mass. A heavier object experiences greater gravitational force than a lighter object does.

## Is air resistance is force?

Air resistance force is the force of air pushing against a moving object. Air resistance force is a type of frictional force (refer to Chapter 5 of this unit). Like all frictional forces, the force of air resistance always opposes the motion of an object. Usually, the air resistance force is not very strong.

## How does air resistance affect the motion of a projectile?

Objects moving through air are slowed down due to air resistance, sometimes called drag. When air resistance is taken into account the trajectory of a projectile is changed. The resistance is often taken as being proportional to either the velocity of the object or the square of the velocity of the object.

## What are the two most common factors that have an effect of air resistance?

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/m3 is a very reasonable value. The shape of an object affects the drag coefficient (Cd).

## Why does air resistance increase with speed?

Drag (air resistance) increases with speed because more air molecules are striking the leading surface of the object per second as its speed increases. With a constant speed you WILL get a constant drag, because drag is a force, and an imbalance of forces is an acceleration, which is not a constant speed.

## What is the definition of drag?

Drag is the aerodynamic force that opposes an aircraft’s motion through the air. Drag is generated by every part of the airplane (even the engines!).

## How is force related to inertia?

Inertia and Mass. Newton’s first law of motion states that “An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.” Objects tend to “keep on doing what they’re doing.”

## How can you reduce the 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).

## Is acceleration force?

Newton’s second law of motion describes the relationship between force and acceleration. They are directly proportional. If you increase the force applied to an object, the acceleration of that object increases by the same factor. In short, force equals mass times acceleration.

## What is the meaning of air resistance?

BSL Physics Glossary – air resistance – definition. 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.

## What causes the air resistance?

This drag force is always opposite to the object’s motion, and unlike friction between solid surfaces, the drag force increases as the object moves faster. Air resistance, also known as drag, is a force that is caused by air, the force acts in the opposite direction to an object moving through the air.

## How does the air resistance work?

There are eight different sorts of forces, one of the forces is air resistance. Air resistance force happens when air is pushing against a moving object. Air resistance is a kind of frictional force. The force always occurs against the motion of an object.

## What is the relationship between these variables and acceleration?

Newton’s second law of motion provides an explanation for the behavior of objects when forces are applied to the objects. The law states that external forces cause objects to accelerate, and the amount of acceleration is directly proportional to the net force and inversely proportional to the mass of the object.

Categories FAQ