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    Instantaneous velocity and time

    can the instantaneous velocity of an object at an instant of time ever be greater in magnitude than the average velocity over a time interval containing the instant?can it ever be less?
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    Distance b/w two aircrafts

    Homework Statement An air-traffic controller observes too aircraft on his radar screen.the first is at altitude 800 m , horizontal distance 19.2km and 25.0 degree south of west.the second aircraft is at altitude 1100m, horizontal distance 17.6km and 20.0 degree south of west.what is the...
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    X-component of a vector

    plzzzzzzzzz help me ......... in what circumstances is the x-component of a vector given by magnitude of a vector times the sine of its direction angle?