How can air resistance be increased and decreased?

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 does increasing air resistance mean?

By definition, air resistance describes the forces that are in opposition to the relative motion of an object as it passes through the air. … Ergo, both increased speeds and cross-sectional areas will result in an increased amount of air resistance.

How does air resistance increase with speed?

As the velocity increases, the force of air in resistance to the object increases. As newton’s 3rd law states, for every action there is an equal and opposite reaction. Therefore, as the force of the object on the air increases, so does the force of the air on the object.

Does air resistance increase with mass?

Air resistance is insignificant for heavy objects precisely because it doesn’t depend on the mass. … Specifically, the change in motion due to air resistance gets bigger as the mass gets smaller.

Does Spin affect air resistance?

The air resistance will be the same, if you spin it in the correct direction with respect to the direction it is being launched in, the rotating bearing will generate lift, which would produce the result you describe.

Do heavier objects fall faster with air resistance?

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. … Air resistance causes the feather to fall more slowly.

Which object is most affected by air resistance?

Both elephant and feather have the same force of gravity, yet the feather experiences a greater air resistance. Each object experiences the same amount of air resistance, yet the elephant experiences the greatest force of gravity.

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 are the factors that greatly affect air resistance on falling objects?

The 3 things which affect the amount of air resistance acting on an object are its relative air speed, its aerodynamic form ( shape and size relative to the air mass), and the density of the air.

Which falls faster feather or rock?

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. … Conduct three trials for each object so that you can calculate an average time.

Do lighter objects have more air resistance?

If you want the answer practically, then it is due to the air friction. It also depends on the surface area of the object falling. The lighter object experiences more air resistance than the heavier one, so it falls slower.

Does surface area affect air resistance?

Most objects falling through air experience a type of friction called air resistance. Air resistance is not the same for all objects. The greater the surface area of the object the greater the air resistance.

Who discovered gravity?

Sir Isaac Newton
Physically, Sir Isaac Newton was not a large man. However, he had a large intellect, as shown by his discoveries on gravity, light, motion, mathematics, and more. Legend has it that Isaac Newton came up with gravitational theory in 1665, or 1666, after watching an apple fall.

What is the gravity in the moon?

1.62 m/s²
Moon / Gravity

What causes gravity?

The answer is gravity: an invisible force that pulls objects toward each other. … So, the closer objects are to each other, the stronger their gravitational pull is. Earth’s gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body.

Who discovered black holes?

Albert Einstein first predicted the existence of black holes in 1916, with his general theory of relativity. The term “black hole” was coined many years later in 1967 by American astronomer John Wheeler.

What did Einstein say about gravity?

Einstein argued that gravity isn’t a force at all. He described it as a curvature of time and space caused by mass and energy.

Did an apple really fall on Newton?

There’s no evidence to suggest the fruit actually landed on his head, but Newton’s observation caused him to ponder why apples always fall straight to the ground (rather than sideways or upward) and helped inspired him to eventually develop his law of universal gravitation.

Can a wormhole exist?

Einstein’s theory of general relativity mathematically predicts the existence of wormholes, but none have been discovered to date. A negative mass wormhole might be spotted by the way its gravity affects light that passes by.

What was Stephen Hawking’s theory?

Stephen Hawking worked on the physics of black holes. He proposed that black holes would emit subatomic particles until they eventually exploded. He also wrote best-selling books, the most famous of which was A Brief History of Time: From the Big Bang to Black Holes (1988).

Can time travel possible?

Time travel is possible based on the laws of physics, according to new calculations from researchers at the University of Queensland. But time-travelers wouldn’t be able to alter the past in a measurable way, they say — the future would stay the same. Visit Business Insider’s homepage for more stories.

How many dimensions are there?

The world as we know it has three dimensions of space—length, width and depth—and one dimension of time.

What is a white black hole?

Physicists describe a white hole as a black hole’s “time reversal,” a video of a black hole played backwards, much as a bouncing ball is the time reversal of a falling ball.