单词	terminal speed
释义	terminal speed (terminal velocity) When an object falls to Earth from a great height, its speed, in certain mathematical models, tends to a value called its terminal speed. One possible mathematical model gives the equation , where m is the mass of the particle and j the unit vector in the direction vertically upwards. The second term on the right-hand side, in which c is a positive constant, arises from the air resistance. The velocity corresponding to is equal to (−mg/c)j, which is called the terminal velocity. The terminal speed is the magnitude mg/c of this velocity. If, instead, the equation is used, the terminal speed is and the terminal velocity is . As the particle falls, its velocity tends to the terminal velocity as t increases, irrespective of the initial conditions.
随便看	multicollinearity multifunction multigraph multilinear multinomial multinomial coefficient multinomial distribution multinomial theorem multiple multiple integral multiple precision multiple regression multiple root multiplication multiplication multiplication multiplication multiplication multiplication multiplication modulo n multiplication sign multiplicative group multiplicative identity multiplicative inverse multiplicity

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