Ma’ruza : Fizika predmenti. Moddiy nuqta kinematikasi va dinamikasi. Saqlanish qonunlari. Rejasi

-urinma= oniy tezlikdir

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Matematikada bu ifoda x(t) ifodadan t vaqt bo’yicha olingan hosila deb aytiladi:

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Bosib o’tilgan yo’ldan vaqt bo’yicha olingan birinchi tartibli hosila moddiy nuqtaning oniy tezligi deb ataladi.

Ko’pinchalik moddiy nuqtaning tezligi vaqtning funktsiyasidan iborat bo’ladi, ya’ni = (t).

Bu tezlikni vaqt birligida o’zgarishi nuqtaning o’rtacha tezlanishi deb ataladi.

Notice that acceleration is a vector quantity with unit length divided by time squared .Ta`rifga ko`ra tezlanish vektor kattalik bo`lib , uning birligi uzunlik birligining vaqt birligi kvadrati nisbatiga teng.

Since velocity is the derivative of position with time , acceleration is also equal to the second derivative of position with time .

Tezlik , yo'lning hosilasiga teng bo'lgani uchun , tezlanish yo'lning vaqt bo'yicha ikkinchi tartibli hosilasiga teng bo'ladi .

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Bosib o’tilgan yo’ldan vaqt bo’yicha olingan ikkinchi tartibli hosila moddiy nuqtaning oniy

tezlanishi deb ataladi.

The position is the initial position plus the initial velocity multiplied by the time plus one-half the acceleration multiplied by the time squared.

Yo'l esa boshlang`ich vaziyat, boshlang`ich tezlikni vaqtga ko`paytmasi va tezlanish bilan vaqt kvadrati ko`paytmasining yarmini yig`indisiga teng .

After integration we can then solve for velocity.