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gravity

Air Resistance

## When gravity is the only force acting?

When the only force acting on a falling object is gravity, the object is said to be in free fall. force of gravity is an unbalanced force, which causes an object to accelerate. Near the surface of Earth, the acceleration due to gravity is 9.8 m/s2.

## What is the resultant force on an object that has reached its terminal velocity?

Objects falling through a fluid eventually reach terminal velocity . At terminal velocity, the object moves at a steady speed in a constant direction because the resultant force acting on it is zero.

## Why do 2 objects fall at the same rate?

The greater the surface areas of an object the more surface for air to push up against and so air resistance will act upon a falling object, slowing its fall. If there is no air resistance, or the same amount of air resistance, then objects of the same mass will fall at the same rate.

## Why do larger parachutes fall slower?

How large a parachute is (in other words, the parachute’s surface area) affects its air resistance, or drag force. The larger the parachute, the greater the drag force. In the case of these parachutes, the drag force is opposite to the force of gravity, so the drag force slows the parachutes down as they fall.

## How much does a parachute slow you down?

Parachutes are designed to reduce your terminal velocity by about 90 percent so you hit the ground at a relatively low speed of maybe 5–6 meters per second (roughly 20 km/h or 12 mph)—ideally, so you can land on your feet and walk away unharmed.

## Do bigger parachutes work better than smaller parachutes?

So if you have two parachutes with the same size and shape but made of different materials, one heavier than the other, the heavier parachute will fall faster. But if a parachute is very large, it catches a lot of air and slows you down a lot more. So a bigger parachute definitely falls slower than a smaller one.

## Why do parachutes have holes in the top?

Parachutes catch a lot of air, creating a lot of drag. They can drastically slow a fall, allowing a softer landing. Some parachutes have a hole in the center to release air in a controlled way. It makes the chute more stable, with only a minimal change in drag.

## Will a parachute work in a vacuum?

Parachutes can’t work in space. They require air to inflate and operate. That doesn’t mean that earthlings haven’t sent a few spacecraft with parachutes. All manned spacecraft, except the Space Shuttle Orbiters, used parachutes to slow their descent after re-entry from space after their mission.

## What is the best shape of a parachute?

The circle parachute should demonstrate the slowest average descent rate because its natural symmetrical shape would be the most efficient design to maximize wind resistance and create drag. On December 10, 2006, four lightweight plastic parachutes were dropped in an inside area with no wind.

## Who was the first parachutist?

André-Jacques Garnerin

## Which parachute has a slower descent?

Meaning the blue parachute has a quicker descent.

## How do you make a parachute last longer in the air?

A circular shape can stay the longest in the air, because a circular shape has a uniform edge which provides the most air resistance which gives the softest landing.

2021-06-17