As a falling object accelerates through air, its speed increases and air resistance increases. While gravity pulls the object down, we find that air resistance is trying to limit the object's speed. Air resistance reduces the acceleration of a falling object. It would accelerate faster if it was falling in a vacuum.
Air resistance will increase as the speed of a falling object increases.
That is the usual scenario. However air density is also a factor. If a skydiver was falling and encountered an area of lower air pressure due to atmospheric conditions, then any increase of speed would be due to a lower air resistance.
I have fallen through air layers where there has been a noticeable increase in air temperature and therefore a drop in air density.
Because of all the variables at play, it would be difficult to prove or disprove that air resistance could actually lower and cause a body ( skydiver ) to accelerate.
This would only happen after the initial attainment of terminal velocity.
No. If its acceleration decreases, its velocity will decrease. This is due to air resistance. If a body is high enough when it starts falling, it will eventually reach constant velocity, called terminal velocity, at which point the acceleration is zero.
It counteracts the force of gravity and slows the decent of the object at a rate proportional to the object's velocity.
Air resistance will determine the "terminal volocity" based on surface area
Air resistance creates drag and slows the object down
It Increases.
It Decreases.
no
increases
To increase friction, the car goes faster so that the air resistance becomes greater. To decrease friction the car goes slower to decrease the air resistance acting on the car. Hope that helped:)
Drop a pound of feathers (in a bag) and a pound of lead from a height. The smaller mass of the lead will let it fall faster due to less air resistance, than the greater mass and much greater air resistance of the feathers.
Faster.
The reason streamlined bodies can move faster in liquid and air is because they have less surface area to cause resistance. For instance, on a windy day, an open umbrella has more resistance and can get caught up in the wind but a closed one with less resistanceÊcan not.
increases
To increase friction, the car goes faster so that the air resistance becomes greater. To decrease friction the car goes slower to decrease the air resistance acting on the car. Hope that helped:)
decrease
They could have be sleek, smooth, and reduces air resistance.
They could have be sleek, smooth, and reduces air resistance.
Drop a pound of feathers (in a bag) and a pound of lead from a height. The smaller mass of the lead will let it fall faster due to less air resistance, than the greater mass and much greater air resistance of the feathers.
You need to make it streamlined at the front so it cuts through the air therefore making it move faster.
The faster the car travels trough the air, the more air resistance there will be so it will be harder for a car to accelerate (hence there are top speeds). However, there needs to be some air resistance for a car to move.
Well, the more the air resistance, the lower the acceleration.
The resistance is greater the faster the vehicle is going.
It increases
Faster.