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Breakpoint: A point scored on the team's own serve. In the scoring system prior to 1999, these were the only scored points (except for sanction points). Even in the present scoring system, these are the points that really count, as the side outs cancel each other
Lift is proportional to the density of the air and approximately proportional to the square of the flow speed. Lift also depends on the size of the wing, being generally proportional to the wing's area projected in the lift direction. In calculations it is convenient to quantify lift in terms of a lift coefficient based on these factors.
A center of gravity that is at or above the lift point will most likely result in a tip-over incident. In general, the further the center of gravity below the pick point, the safer the lift. There are other things to consider, such as shifting loads, strength of the load and mass, distance between pick points, and number of pick points.
Lagrangian point – In celestial mechanics, the Lagrange points / l ə ˈ ɡ r ɑː n dʒ / (also Lagrangian points, L-points, or libration points) are points near two large orbiting bodies. Normally, the two objects exert an unbalanced gravitational force at a point, altering the orbit of whatever is at that point.
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.
Mean aerodynamic chord (MAC) is defined as: [6] = (), where y is the coordinate along the wing span and c is the chord at the coordinate y.Other terms are as for SMC. The MAC is a two-dimensional representation of the whole wing. The pressure distribution over the entire wing can be reduced to a single lift force
Break point: Point which, if won by the receiver, would result in a break of service; arises when the score is 30–40 or 40–ad. A double break point or two break points arises at 15–40; a triple break point or three break points arises at 0–40. [27] Break: To win a game as the receiving player or team, thereby breaking serve. At high ...
A A-grade Also aid climbing grade. The technical difficulty grading system for aid climbing (both for "original" and an adapted version for "new wave"), which goes: A0, A1, A2, A3, A4, A5 and up to A6 (for "new wave"). See C-grade. Abalakov thread Abalakov thread Also V-thread. A type of anchor used in abseiling especially in winter and in ice climbing. ABD Also assisted braking device. A term ...