Why can't a object falling in a vacuum ever reach terminal velocity?
There is no drag in a vacuum to act against the acceleration.
Terminal velocity is the velocity where the force of gravity balances the drag of the air stream flow past the object. At terminal velocity, the object's acceleration due to gravity becomes zero, and the object begins to fall at a constant velocity. In a vacuum, however, there is no air - and thus no drag- so the object continues to accelerate.
-- If it's falling through a liquid or a gas, it reaches some greatest speed, called "terminal velocity" but really more like a terminal speed. -- If it's falling through vacuum, there is no limit ... the object just keeps accelerating.
No, mass does not have an effect on a falling object, as long as the object is falling in a vacuum. If an object is falling through air, then aerodynamics come into play. For example, a 1' solid steel sphere will reach a higher terminal velocity than a 1' polished wood sphere.
No. Terminal velocity is a limiting velocity, reached when a falling object's drag to wind resistance equals the force of gravity. For instance, on the Earth, a human being's terminal velocity is about 200 kilometers per hour, depending on drag which is depending on how the arms and legs are held. On the moon, however, there is no atmosphere - it is in a vacuum - so there is no wind resistance due to velocity… Read More
Mass by itself has no effect on velocity. In terminal velocity (velocity of an object falling through a fluid) the mass tovolume ratio (density) can change the final velocity at any given medium density, but in acceleration in a vacuum there is no impact from mass on velocity.
This entirely depends on the shape and mass of the object as well as the substance that the object is falling through. If the object is falling through a vacuum, then there will be no maximum velocity (called terminal velocity), except for the speed of light, of course. As an object falls, it experiences resistance from the air, or from whatever it is falling through, that depends on its speed and how aerodynamic it is… Read More
If the penny is in a vaccum, the penny has no terminal velocity because verminal velocity is when the resistance against the falling penny is equal to the force of gravity. So if it is in a vaccum, it has no forces resisting the fall, and it has no terminal velocity.
It accelerates at a higher rate
I think it depends on the distance it is falling from. The longer it falls the more momentum it gains. _________ The idea is called 'terminal velocity'. For a skydiver in the typical flat open position (to maximize drag) the terminal velocity is about 195 mph. Where objects can fall in vacuum, there is no termal velocity, except for the moment of impact with the body responsible for the gravitational field, at which time velocity… Read More
I'm reluctant to answer because the wording of the question suggests the person asking is looking for answers that meet undefined constraints. One way to increase the terminal velocity of a falling object is to drop it in a vacuum. Another is to drop it in a atmosphere of hydrogen. . 1. increase the mass, without increasing the drag coefficient. 2. Decrease the drag coefficient, without decreasing the mass.
Yes. Consider a skydiver in freefall. Fairly quickly the skydiver will reach terminal velocity (the speed at which their acceleration from gravity is cancelled out by the resistance of the air through which they are falling). At terminal velocity the skydiver has non-zero velocity (about 56m/s or 200km/h) but zero acceleration (because their velocity is not increasing). In a vacuum, where there is no air resistance, there is also no terminal velocity. Because there is… Read More
Terminal velocity for a feather will be considerably lower than the terminal velocity of a bullet. The size and shape of the object will play an important role. While objects dropped from a given height in a vacuum will fall to earth at the same velocity, the resistance caused by atmosphere will be different for different objects.
The air resistance of an object is proportional to the object's velocity, and the surface area of the object that is in contact with the air. If a feather and a golf ball are dropped at the same time in air, the golf ball will drop faster because of the total surface area of the object in contact with the air. If the same two objects were dropped in a vacuum (no air), they would… Read More
Surface area is ONE thing that can affect how fast an object falls. Two forces determine how fast an object falls - the force of gravity and the opposing drag on the object from the medium it is falling through. In the case of an object falling in a vacuum, there is no drag so the object falls strictly according to the law of gravity. If an object is dropped through a fluid such as… Read More
By decreasing your friction. Making the falling body more streamlined such that the "bow wave" is decreased, and the partial vacuum behind the falling body (drag) is efficiently filled, as well as reducing the interaction between the surface interface between the falling body and the air moving past it. Each of these will increase the terminal velocity. However, one eventually reaches a maximum which cannot be exceeded.
It depends on how big and heavy it is. If it is large and heavy it falls fast, if it is small and light it falls show ************************************* Unfortunately, the above answer is not correct. Size and weight of a falling object (in a vacuum) have no effect on the Speed at which it falls. In "open air" the size and shape of an object WILL effect its "Wind Resistance" and can slow it down… Read More
Inside a safe dropped from a plane. If there were a very good vacuum to drop them in, it would be close. The air resistance of a feather limits its falling velocity more than the resistance on the hammer. When the drag caused by friction equals the weight of the object, it cannot continue to accelerate and falls at a speed called its terminal velocity.
What is the terminal velocity of a bullet falling back to the earth after it is shot straight in the air?
If the bullet were shot perfectly vertically in a vacuum, it would reach its maximum altitude, then fall at a velocity of 32 ft/sec/sec. The terminal velocity would depend upon the altitude reached by the bullet, which in turn depends upon the caliber and load of bullet shot.
Air is not a requirement for acceleration. Objects in the vacuum of space accelerate to other objects under the force of gravitational attraction. Rockets are propelled by escaping gases in the same manner as you are accelerated in the opposite direction when you throw an object while you are sitting on a rolling chair. Answer: Let's look at the case of an object falling from a great height towards the Earth. Once the object is… Read More
This is not a simple question and not enough information is provided to answer it. Among other things it depends upon the time it takes to reach terminal velocity and the terminal velocity depends on the various drag forces operating which in turn will depend on other variables such as initial height, wind speed, temperature, humidity, etc. You could calculate the velocity of any object falling in a vacuum if the acceleration due to gravitational… Read More
Is it possible for a horizontally running human to cover a certain distance faster than a vertically falling object in Earth's gravitational field?
it all depends on the terminal velocity of the falling object. Terminal velocity is when a falling object experiences zero exceleration or basically when gravity and air resistence balance themselves out, leaving the falling object at a limited speed. The terminal velocity of a feather would be very low and could easily be outrun by a human but the terminal velocity of a brick would be much higher and impossible to outrun. The approxtiamate terminal… Read More
If the object is falling in vacuum, then its direction is downward, and its speed at any time is Speed = (speed when time started) + [(acceleration of gravity) x (number of seconds since time started)]. If the object is falling through air, water, or some other fluid, then the formula is much, much more complicated. It involves the object's mass and shape, and the properties of the fluid it's falling in.
The speed of an object in free-fall will depend on how far it fell and the gravitational acceleration. You gave neither. Note: an object cannot free fall in an atmosphere as drag will eventually balance the gravitational acceleration and the object will reach terminal velocity. Free fall is only possible in a vacuum.
Too many unknown variables. If you mean to refer to acceleration due to the differences in gravity, rather than velocity, that would be a different question. The moon's gravitational pull is about 16.7 percent of that on Earth, meaning things would only "weigh" 1/6 of what they do on earth, but they still have the same MASS regardless of where they are in the universe. Their speed upon impact would depend upon the forces applied… Read More
It is a projectile falling with an acceleration equal to that of free fall. (an object falling in a vacuum at the earth's surface)
the object's falling speed
In air, yes. In vacuum, no.
In air, depends on the force behind it and the objects drag coefficient. In a vacuum, the speed of light.
Because for their weight, they have a high amount of surface area that uses the natural resistance of the air to slow its descent. In a vacuum (a place without air), a feather will fall with the same speed as any other object.
Terminal velocity on earth is static for all objects. A coffee filter being so light would have an effect on how much the friction slows it down, it would not however change its "terminal velocity" in a vacuum it would fall at the same rate as you or I. Approximately 120 MPH.
No because air resistance determines how fast an object reaches terminal velocity. NASA did an experiment on the moon with a Hammer and a Feather. On the moon they hit the ground at the same time. On earth they don't. I have added 2 video links so you can see for yourself. One was done on the moon, the other was done in a vacuum chamber on earth, so that people couldn't argue it was… Read More
Friction in the form of air resistance will slow down a falling object. This is why if you drop a feather and a bowling ball at the same time from the same height, the bowling ball will beat the feather, but if the same experiment is performed in a vacuum, which ideally contains no air, they will reach the ground at the same time. In a vacuum, all objects fall at the same velocity, but… Read More
A speed just less than the speed of light in vacuum.
Yes, in general friction can occur in a vacuum, but the only kind of friction that doesn't occur in a vacuum is, of course, air friction. There is no drag force on an object falling in a vacuum.
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.
It moves with a constant acceleration downwards. This means that its velocity is increasing at a constant rate.
A falling object would have less drag than in a classroom in a low pressure environment (higher up) or in a space or a vacuum, but then it's not really falling. Hope this clarifies.
Theoretically, they will strike the ground simultaneously, because falling objects accelerate at 9.8 m/s2 (or 32.2 ft/s2) regardless of their mass or weight. This is particularly true when objects fall in a vacuum, where air resistance is non-existent. In practice, however, the object that is more aerodynamic will strike the ground first, because air friction will have less effect on it, and its terminal velocity will be greater.
No. There's an interesting mathematical relationship here: Assuming no friction and no interference from other bodies, the speed acquired by a body falling "from infinity" towards another object is exactly equal to the "escape velocity" from that object. For Earth, this is about seven miles per second, nowhere near the speed of light.
Why does the book fall on the floor before the paper does if dropped at the same time from the same height?
air resistance is everything, if both were dropped at the same time from the same height in a vacuum, they would accelerate equally, hitting the floor at the same time. . acceleration (a) is given by: a = force / mass . force (down) is given by mass (kg) * acceleration due to gravity regardless of the mass, the acceleration in a vacuum would be the same. . Once air is introduced however, any motion… Read More
In general the velocity (speed) of an object undergoing constant acceleration, a, is V=vo+at where vo= initial velocity and t= duration of acceleration. For an object in free fall in a vacuum, a=g=9.8m/s2.
If the force is continuously applied, the object will experience an acceleration in the direction of the applied force. If the force is applied once, the object will move at a constant velocity in the direction of the applied force in a vacuum. If the object is not in a vacuum, it may experience a deceleration and eventually come to rest.
surface area which causes more resistance (assuming object is falling in non- vacuum)
Yes. For instance, on the moon (or just above it). You can also build vacuum chambers on Earth.
It is the rate that a falling object accelerates in a vacuum at one gravity.
They both will fall down at equal speed and will land equally. Test it: Drop a pencil and a rock from your house. They will fall equally. That would happen in a vacuum, however in our atmosphere falling objects encounter resistance from the air. Each object, depending upon shape and form will reach a terminal velocity. Objects that are more aerodynamic (smooth and of regular shape) will fall faster than rough and irregularly shaped objects… Read More
Einstein said that in a vacuum light travels at a constant velocity that cannot be exceeded by any physical object.
Its when a body is allowed to fall towards another body, where gravity is the only force (or significant force) acting on the body - at least initially. Near the surface of the Earth, an object in free fall (in a vacuum) will accelerate at approximately 9.81 m/s2, regardless of its mass. In air, air resistance will act against this force as the object velocity increases, the object will eventually reach a terminal velocity where… Read More
An object with balanced forces acting on it is still. An object with unbalanced forces acting on them moves at an non constant velocity. It is possible for an object to have balanced forces acting on it and yet move in a vacuum.