Why is terminal velocity with a parachute open less than the terminal velocity before it was open?
because there is more air resistance
Yes, until he reaches terminal velocity.
When an object is released in a fluid is the drag force less than its weight before it reaches terminal velocity?
When an object is released in a fluid is the drag force less than its weight before it reaches terminal velocity?
The maximum speed you can reach is also known as terminal velocity and this is the speed at which your mass is resisted by the air. Typically in a belly to earth body position, this is around 120mph. It takes around 10 seconds to reach this speed. The minimum exit height is 2500ft and would not reach this terminal velocity before they need to deploy their parachute. Most skydivers jump from a lot higher… Read More
More resistance, caused by a greater density.
The incompressibility, inertia and relatively higher viscosity of water make it difficult to displace, so its reactive forces on the falling object are greater; hence the terminal velocity is reduced.
Which is greater - the terminal velocity of a small blood droplet or the terminal velocity of a large blood droplet?
The small blood droplet would have a greater terminal velocity. The smaller droplet has a smaller surface area, thus suffers less air resistance.
There is no such thing as "maximum terminal velocity", neither on Jupiter nor hear on Earth. The "terminal velocity" depends on the specific object - and on the atmospheric conditions. For example, a very heavy object will typically have a larger terminal velocity than one that is very light; and near Earth's surface, the terminal velocity (for a given object) will be smaller than in the upper atmosphere, where there is less air resistance.
That varies, depending on the object. A massive object may take a long time to reach terminal velocity; a less massive object will reach terminal velocity faster. It basically depends on the object's mass, size, and shape.
its because the terminal velocity is directly proportional to mass and square of the radius of the drop. the radius and mass of the droplet is very very less...so terminal velocity of the droplet is also very less.. that why it is suspended in the air..
High Velocity is short for "high terminal velocity" which is another way of saying that the blood spatter is small and is so small, in fact, it is the smallest of other velocities: • Low terminal velocity • Medium terminal velocity The high velocity pattern is usually less than one millimeter in diameter and is known to fall up to around 100 feet per second.
Assuming this is a free fall on the earth, the highest velocity an object in free fall can reach is 9.8 meters per second or 32 feet per second. answer 2. above is described the acceleration due to gravity on Earth. The Q asks for the Highest velocity. This is known as the Terminal Velocity. This depends upon buoyancy, air-resistance and so on. The terminal velocity of a Parachutist is much less than that of… Read More
32.2 ft/s2 on earth A second after jumping out of a plane your speed will be 32.2 feet per second. After the second second, it will be 64.4 feet per second. After three seconds your speed will be 96.6 feet per second. Each second 32.2 ft/sec will be added until acted on by another force such as a parachute, air friction (terminal velocity) or the ground. Terminal Velocity is about 61 ft/sec. it will be… Read More
Have more air resistance or less mass. Or have something to stop you from it. by hitting the ground
Terminal velocity is when air resistance balances out with gravity. For humans it's usually around 2000 ft of falling, gravity accelerates the person towards the ground at about 9.8m/s, as said person speeds up, air resistance increases and it becomes harder to accelerate. Terminal velocity is the point at which one may no longer accelerate. To control it: more air resistance = slower descent (terminal velocity comes sooner and is not as fast (i.e.parachutes), less… Read More
Usually not. Most objects have a terminal velocity that is considerably less than the speed of sound.
If the object falling is falling at a constant velocity, i.e. terminal velocity, then the upward force of air resistance will be equal to the downward pull of gravity. If not, then the force of air resistance will be less than the pull of gravity, and the object will be accelerating with a force equal to the difference, until terminal velocity is reached
How could Kittenger in the Project Excelsior article achieve speeds of 600 MPH when an 85000 foot drop in 276 seconds implies an average of 210 MPH and a terminal velocity of 420 MPH?
at that altitude (stratosphere?) the air density is much less, therefore terminal velocity is much greater
I will try and help you with this one.. terminal velocity is when a object falling has reached its fastest falling speed and will stay at this speed reaching a terminal velocity is due to friction in the air although you can't see them air particles offer resistance when passed through them untill the object changes its shape..eg aerodynamics...for example a sky diver will fall at about 80\100 mph...but if they dive down there will… Read More
Compare the effects of gravity and air resistance on a falling skydiver before and after she opens her parachute?
-- The force of gravity is unchanged before and after. -- The force of air resistance on the skydiver is greater before, and less after, because she is falling slower after the parachute opens. -- The effect on her of air resistance is greater after the parachute is open. The increased air resistance itself acts on the parachute, and its effect is transferred to the skydiver through her harness.
The terminal velocity will depend on the mass (greater mass = more terminal velocity) and on the air resistance, which depends greatly on the surface are (more surface area = less terminal velocity). 2nd Answer: I believe that objects of differing mass fall at the same rate if you exclude air resistance. I remember the penny and the feather in an evacuated cylinder hitting the cylinder bottom at exactly the same time.
The more streamlined the body, the less the air resistance, and the greater the speed. Carrying a heavy weight would also help. Whilst performing the sky dive on Jupiter would also increase the terminal velocity, (because of greater g) it would cost too much to do it.
Despite how odd it may seem, an object never actually achieves its terminal velocity. The way air resistance works is that it provides a force proportional to the current velocity of the falling object. This results in the object experiencing less and less force as it slows down. The falling object will just keep getting closer and closer to its terminal velocity without ever actually achieving it. At the very least however, you can figure… Read More
32 feet per second per second is the standard acceleration. As the object accelerates (usually downwards due to gravity), the drag force acting on the object increases. At a particular speed, the drag force produced will be equal to the downward force, mostly the weight (mg), of the object. Eventually, it plummets at a constant speed called terminal velocity (also called settling velocity). Terminal velocity varies directly with the ratio of drag to weight. More… Read More
The golf ball has less air resistance then the tennis ball, and so accelerates slightly quicker (it will also have a greater terminal velocity).
An object falling through the air will have a terminal velocity of approximately 120-140mph. The less "wind resistance" it has the faster it goes. Although the penny has less wind resistance than say, an elephant, it still is not an ideal shape for moving through the air. Being flat, it can flutter, spin, 'float', etc, and that will slow it down.
When a body attains terminal velocity its drag force and gravitational force on body cancels each other then why does the body still comes down instead of floating?
When the gravitational and drag forces on the object are equal, there is no net force acting on the object. This means that the body will not accelerate; it will not change it's velocity. In order for the body to slow down to "floating speed", the drag force would have to be greater than the gravitational force. Drag force is dependent on velocity though, so the greater the velocity the greater the drag. Since the… Read More
Ants have a couple of things going for them, but mainly physics of airflow. In essence the terminal velocity of an ant in air is much slower than that of a human. Terminal velocity is the speed and which air resistance forces counter balance gravity and you do not accelerate (go any faster) anymore while falling. The terminal velocity of an ant is about 4 mph whereas a human is well over 100 mph. So… Read More
Momentum is the product of mass times velocity. With less velocity, there will be less momentum. (An object's mass will usually not change.)
Is it possible to drop a pod with a man in it from space and the man still be alive when he hits earth?
Sure, The early space ships were little more than a pod dropped from space. The bottom of the capsule had a heat shield for reentry, and it deployed parachutes during the descent. Ok, if you choose not to add a parachute. Then the maximum G-Force a human body can withstand is somewhere around 50-100G's. So, if you can design your capsule so that the occupant is decelerated somewhere around 50G's or less, then it should… Read More
Terminal velocity is determined not by mass (weight) but by air resistance. When the gravitational force is matched by the drag force (air resistance), acceleration becomes zero. If a skydiver did two dives, one with a backpack filled with feathers and one with the same backpack filled with lead, the terminal velocities of each dive would be the same, as the air resistance induced by the diver did not change from dive to dive. Weight… Read More
the more holes in a parachut the less resistance the parachute causes so the more speed the parachuter can pick up causing him to travle at a faster speed with more holes in his parachute
Why a person without a parachute falls fast than a person without a parachute falling from same height?
if there is no air then both will take same time.But due to presence of air person who is without parachute will take less time.
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
because a car has more surface area than a person. good luck :) -smartsofia * its because the car weighs more. the heavier the object, the greater the surface area [of the parachute] required to reduce its velocity. objects fall at the same rate because of gravity however, due to their weight differences, they have different force (N) in movement. (i.e a person travelling at 100km/hr will do less damage to a brick wall than… Read More
If it dropped from a high enough distance, it would if its terminal velocity were higher than the speed necessary to kill a person. Since coins are small and more aerodynamic, the terminal velocity would be higher than a larger, flatter object, making it sort of like a bullet. The weight of a penny would be a function of it's acceleration. If the penny is still, that acceleration would be that of gravity, more or… Read More
i think it's 2
Deceleration (or negative acceleration).
If falling upside down, a signal is sent to a vestibular in their inner ear - which acts as a balance and orientation compass - and their bodies can maneuver around and, thanks to their flexible back, they can reorient themselves upright. Cats are light on their feet and can spread themselves out like a parachute to slow their velocity while falling, helping them to avoid injuries like broken bones when they land. It's interesting… Read More
A light object has less inertia to overcome and therefore takes less force equal to its weight to get it to move. The amount of force needed to get a heavier object to move is balanced by the increase in its weight. These facts are true up until acted on by another force such as air resistance. For example the fastest that a human can fall is 200 mph before it stops speeding up. A… Read More
inital velocity (u) should be less
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
Usually a dog weighs less.
Ten minutes, a minute more or less.
if the velocity is positive to start with it changes direction when the velocity is less than zero; that is, when it is negative.
An object that decreases its speed also decreases the magnitude of its velocity and decreases the magnitude of its momentum. Momentum is mass time velocity. Less velocity, less momentum. Technically, velocity is a vector and therefor momentum is a vector. One can speak of smaller or larger magnitudes of a vector, but not smaller and larger vectors because vectors have magnitude and direction. Speed is the magnitude of velocity.
surface area of the parachute will affect the decent. eg large parachute's catch more air. also the shape of the parachute, more of an arc the less air it will catch do. the best paracute is a round one for air however they are terrible for steering.
Considering the rain droplets as spherical body. We have two forces acting on the rain drop when it is falling through the sky, namely the resistance force due to friction(drag force)upwards and its weight downwards. Th rain drop falling from such distance attain a terminal velocity while falling i.e their speed becomes constant after sometime. This happens when the drag force equals the weight of drop,, this happens because drag force increases with velocity of… Read More
If you throw an object towards the ground would it acceleration be greater or less thatn an object free falling?
Both objects would eventually reach terminal velocity which means they would both fall at the same speed.- But - compared to the falling object, the downward acceleration of a thrown object is the same.