are four legs faster than two?
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Four legs remain faster than two. second – while man can only achieve a maximum of about 11 metres per second.
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In a distance stride, most of the impact is on the ball of the foot -- but the toes provide a longer stride for the long muscles in the legs. A second use of toes is balance-- we are specially adapted to walking on two legs and toes provide a way to maintain balance on very uneven terrain.
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“Skipping is a perfectly fine way of locomotion, but it requires more metabolic energy than walking does at most speeds, or running does at high speeds,” he said. ... “They discover pretty quickly they can run at the same speed as skipping, and they're a lot less tired while doing it,” Gregg said.
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With AWD, torque is sent to all four wheels. The advantage in getting moving in slippery conditions is obvious. Since AWD turns four wheels instead of just two, there's that much more grip, and when the available traction is very low—as on snow and ice—you can accelerate better, with less or even no tire slippage.
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Having longer toes and shorter legs increases your chances of being a fast runner, claim scientists. Researchers found that sprinters had 12 per cent longer toes - around half an inch on average - than their slower counterparts of the same height. ... "It is all about the start of the sprint," he said.
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The number of legs a centipede has depends upon the number of body segments that make up its body, and this number varies by species. Centipedes typically have one pair of legs per segment. A fully equipped adult centipede can have between 15 and 177 pairs of legs.
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A 4-pole motor has about 3.0 ft. -lbs of torque per horsepower where a 2-pole motor has 1.5 ft. ... At 60 Hz, a 4-pole motor is about 1800 rpm where a 2-pole motor is 3600 rpm. Thus, the 4-pole motor provides higher efficiency, higher torque per unit of volume and weight.
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How fast can you drive in 4WD high? It is not recommended to drive faster than 55MPH in 4WD high on low traction surfaces. 4WD should only be engaged when road surface traction is low.
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Legs can be trained at a minimum twice a week but no more than four days a week on nonconsecutive days.
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At 60 Hz, a 4-pole motor is about 1800 rpm where a 2-pole motor is 3600 rpm. Thus, the 4-pole motor provides higher efficiency, higher torque per unit of volume and weight.
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Skates with three wheels, tri-skates, are less stable than your regular 4-wheel skate and not really ideal for those learning to skate, but they go fast because of the big wheels, with better maneuverability than skates with four wheels the same size.
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Slow Reps vs. Scientists in Sao Paulo, Brazil, say "slow speed" reps can help you build muscle up to 3 times faster than "fast speed" lifting. However, in a surprising twist of accepted lifting principles, they also found that slow speed lifts can progress strength up to five times faster than fast-speed reps.
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Believe it or not, sometimes 2 + 2 does not equal 4. It depends on what type of measurement scale you are using. There are four types of measurement scales   nominal, ordinal, interval, and ratio. Only in the last two categories does 2 + 2 = 4.
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While it's true that some of the power in the running stride comes from your quads and calves, the reality is that the quads and calves play only a minor role in your ability to generate a powerful stride compared to the hips, hamstrings and glutes.
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Most people have legs that are slightly different in length, but it's uncommon for legs to be so different in length that it makes the hips uneven. According to the American Academy of Orthopaedic Surgeons, a difference of about 4 centimeters can cause walking difficulties or a limp.
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The positioning of the centre of gravity during locomotion is less critical since a quadrupedal is usually supported by two or more legs during the stride cycle. ... During bipedal locomotion the body's centre of gravity must be balanced over one leg during a stride.
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Humans have two lower leg bones, the tibia and the fibula. In humans and in the frog, the femur is the single upper leg (thigh) bone. A third division of the frog's leg consists of two elongated anklebones, or tarsals. As in other vertebrates, the frog's skeleton is moved by muscles.