Предмет: Физика, автор: olga008

. Частица движется вдоль оси Х по закону Х = -19 + 20 t - t2. Найти модуль скорости частицы.

Ответы

Автор ответа: Askew

Модуль скорости это будет производная закона движения

X' = (-19)'+(20t)'-(t2) = 20-2t

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