The errors in the projections were due to applying a model that was valid for special cases under laboratory conditions, but did not take into account factor
of air resistance.
Moreover, a 0.27 Cd
of Air Resistance Coefficient, the highest in the segment, was achieved by applying design elements that enhance aerodynamics.
For a person running at a typical casual runner's pace of 2.5 meters per second (9 km / hr, or 5.6 mph) it can be shown, based on data collected by LG Pugh for the study titled «The influence of wind resistance in running and walking and the mechanical efficiency of work against horizontal or vertical forces,» that the energy cost
of air resistance while running on solid ground is roughly 0.84 calories per kilometer (this is equivalent to approximately an extra 1.2 % calorie burn relative to a runner on a treadmill).
The intent of the treadmill factor (TF) used within this running calorie burn calculator is to account for the presence or absence
of air resistance.
Apart from the running calorie burn considerations discussed above, this running calorie burn calculator also takes into consideration the absence or presence
of air resistance while running, based on whether or not the runner is on a treadmill (i.e. no air resistance to overcome) or solid ground (i.e. air resistance must be overcome).
As downhill skiers can exceed speeds of 120 km / h, they are subjected to high levels
of air resistance, and must adopt a tuck position to reduce this.
When Nelson speaks of losing time by opening up in a jump, she is talking about how much her momentum is slowed by her body slamming against a wall
of air resistance.
Not exact matches
The skater crouches forward (as if he was skating in a squat position) to reduce drag caused by
air resistance on the front
of his body, and to help him balance.
Musk proposed in 2013 that a hyperloop system, which is similar to a magnetic levitation (maglev) train but runs through a low -
resistance tunnel with much
of its
air removed, would cost $ 11.5 m (# 9.4 m) per mile to build.
A press release distributed by Norway Post explicitly mentioned some
of the Tesla Semi's main design features, such as its low
air resistance, automatic emergency braking, Autopilot technology, and its capability to cover up to 500 miles on a single charge.
Spongy white interior with a little
resistance and lots
of lovely tiny
air pockets.
In 1977, more than 30 years after he parachuted behind enemy lines to aid the French
resistance (he was later wounded and captured), he was feted at a Frenchman's party as the crazy American who dropped out
of the
air with a fishing rod tied to his leg.
When the highest attainable speed is reached, we squat low on our snowshoes [skis] to prevent retarding speed and to offer as little front as possible to the
resistance of air...»
Starting from scratch pad, Brodeur juggled equations dealing with gravity,
air resistance and ball spin, and while his Y = 1/2 GT ¬ ¨ ¬ ® «Äö √ cents ¬ ß (in which Y stands for the downward pull
of gravity on the ball from a horizontal plane, G for gravity and T for time) is not on the order
of E = mc ¬ ¨ ¬ ® «Äö √ cents ¬ ß, it did prove that the fastest serve possible is 140 mph.
A change to the seams has reduced
air resistance on baseballs, and between that and the sudden desire
of so many players to hit fly balls, we've got ourselves a whole bunch
of dingers we didn't have even just a few years ago.
Using everyday items like bottles, cardboard, glue and tape, you can build awesome rocket ships, launch pads and solar systems to learn more about scientific concepts like Newton's Laws
of Motion, speed, gravity and
air resistance.
Crouching down reduces
air resistance as you make yourself smaller and hide behind the handle bar
of the scooter.
Recreation Director Gary Major also asked for an
air hockey table and Ping - Pong tables for the teen area and a gazebo in the northeast corner
of the park, but his requests met with
resistance.
The gel is great for
resistance — so the stars don't immediately fall to the bottom
of the bottle, and the little
air bubbles inside the gel simulate all the little stars in the galaxy.
While British forces are taking part in
air strikes on IS targets in Iraq, they are not involved in the US - led coalition targeting Syria due to
resistance from opposition parties still mindful
of previous unpopular interventions in Iraq and Afghanistan.
It is like the strong
air resistance of air a bicycle rider experiences.
The balls, though made
of different materials, met little
air resistance and landed at the same time.
Even though they ate the same food, the mice living in dirty
air developed metabolic changes characteristic
of insulin
resistance while the other mice did not.
Galileo's work wasn't all staring at the sky, either: His studies
of falling bodies showed that objects dropped at the same time will hit the ground at the same time, barring
air resistance — gravity doesn't depend on their size.
While it takes a charge
of more than 5000 volts to overcome the
resistance of the
air and create a spark, smaller unseen discharges can cause a wide range
of problems in electronics equipment — from intermittent faults in circuits to the disruption
of computer systems.
As the descending body penetrated deeper,
air resistance probably caused it to explode in an airburst with a strong flow
of heated gas that was carried downward by its tremendous momentum.
When the researchers attached the sensor to a violin playing the wedding tune «Salut d'Amour» by British composer Edward Elgar, for example, the
resistance of the device varied in sync with
air vibration produced by the instrument, correctly recording every note
of the song.
As a result, two objects dropped on Earth's surface should accelerate at the same rate (neglecting
air resistance), even if they have different masses or are made
of different materials.
In the three - year study, researchers from Radboud University Medical Centre and The University
of Manchester compared
resistance profiles in 230 fungal samples, collected from rural areas in West Yorkshire which were treated with fungicides, to 290
air and soil samples from inner city sites across Greater Manchester.
Current testing requires a series
of methods including a spirometry test, which measures the amount (volume) and the speed (flow)
of air during breathing, followed by a body plethysmography test measuring static lung volumes and airways
resistance and finally a diffusion test, which measures the amount
of oxygen and other gases that cross the lungs»
air sacs.
Biomechanists Andy Ruina and Mario Gomes
of Cornell University in Ithaca, New York, wondered if a walking or swinging robot — as long as it had no friction in its joints or
air resistance — could achieve the same feat.
In the past, attempts have been made to create photovoltaics that could be incorporated into textiles, but typically they lacked at least one
of the important properties — long - term stability in both
air and water, energy efficiency, and robustness including
resistance to deformation — that are key to successful devices.
On account
of the sharpness
of the angle
of advance presented by the forward planes it is impossible to obtain any higher speed when the machine is in the
air, as the great
air resistance encountered by the aeroplane when flying at so sharp an angle consumes the entire horse - power.
New research shows that growing up in areas where
air pollution is increased raises the risk
of insulin
resistance (the prescursor to diabetes) in children.
«
Air pollution increases risk
of insulin
resistance in children.»
The drag coefficient is coded into the game's software to simulate
air resistance, which greatly affects the pace at which an object rises and falls in the shape
of a parabola.
The researchers found that in all crude and adjusted models, levels
of insulin
resistance were greater in children with higher exposure to
air pollution.
«Oxidative stress caused by exposure to
air pollutants may therefore play a role in the development
of insulin
resistance.
He concludes: «To our knowledge, this is the first prospective study that investigated the relationship
of long - term traffic - related
air pollution and insulin
resistance in children.
«The ball moves at its fastest velocity when it comes right off the foot, and
air resistance immediately slows it down until it reaches its maximum height,» says John Eric Goff, Lynchburg College physicist and author
of Gold Medal Physics: The Science
of Sports.
Strange ball behavior in earlier versions
of the game has been traced to an error in the way
air resistance was calculated
These intriguing findings suggest that longer - term exposure to PM
air pollution may promote the chronic development
of insulin
resistance, obesity, and the metabolic syndrome.
It can be anywhere from four to 42 times the
resistance of air, to tone your muscles from all directions so you gain strength, agility, and flexibility.
A lot
of exercise bicycles use magnetic
resistance, but those using
air resistance are also popular these days.
However, it has been shown that strength work can lead to as much muscle growth as bodybuilding hypertrophy work — which then leaves some
of the traditional thinking around
resistance training up in the
air.
Basic squats also referred to as
air squats or bodyweight squats is a form
of squats that solely uses one's bodyweight without any additional
resistance or fitness equipment.
A study titled «The influence
of wind
resistance in running and walking and the mechanical efficiency
of work against horizontal or vertical forces,» by LG Pugh, has shown that there is an increased energy cost
of running on a solid surface, as opposed to on a treadmill, due to
air resistance.
The
air resistance design has been around since the 1980's and has become the standard model for the sport
of indoor rowing.
The concept 2 rowing machine is an example
of one
of the most popular
air resistance rowing machines on the market that have been adopted by many health clubs as well as rehabilitation centers and is the first pick for indoor rowing competition around the globe.
Air Resistance: These are perhaps the most popular type
of rowing machines on the market today.