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Brake: devices used to stop or slow down a bicycle. Rim brakes and disc brakes are operated by brake levers, which are mounted on the handlebars. Band brake is an alternative to rim brakes but can only be installed at the rear wheel. Coaster brakes are operated by pedaling backward; Brake lever: a lever for actuating a bicycle brake
1- or 2-digit/letter combination: Speed rating; see table below. Additional marks: see subheading below. As an example, if a tire size has two sets of numbers (6-12, 5.00-15, 11.2-24), then the first number (5.00-15) is the approximate width in inches, and the second number (5.00-15) is the rim diameter in inches.
Drivers race on the apron at Chicagoland Speedway (the area between the white and yellow lines). aero cover See wheel shroud. air jacks Pneumatic cylinders strategically mounted to the frame near the wheels of a racing car, which project downwards to lift the car off the ground during a pit stop to allow for quick tire changes or provide mechanics access to the underside of the car for repairs.
At the end of the game, one may complete a round. E.g., with three players A, B and C (starting on that order), if B is the first to cross the finish line, C is allowed one more move to complete the A-B-C cycle. The winner is the player whose car is the greatest distance beyond the finish line.
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where Δt is the time interval between two co-local events (i.e. happening at the same place) for an observer in some inertial frame (e.g. ticks on their clock), known as the proper time, Δt′ is the time interval between those same events, as measured by another observer, inertially moving with velocity v with respect to the former observer ...
At a certain speed the sets of spokes appear to slow and rotate in opposite directions. The wagon-wheel effect (alternatively called stagecoach-wheel effect ) is an optical illusion in which a spoked wheel appears to rotate differently from its true rotation.
Also gas pedal. A throttle in the form of a foot-operated pedal, or sometimes a hand-operated lever or paddle, by which the flow of fuel to the engine (and thereby the engine speed) is controlled, with depression of the pedal causing the vehicle to accelerate. admission stroke See induction stroke. aftermarket air brake 1. A type of brake in which the force that actuates the brake mechanism is ...