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MIȘCARE ȘI REPAUS

CLASA-7

QuestionAnswer
Ce mărimi fizice trebuie să cunoaștem pentru a calcula viteza distanța,timpul
Poziția unui corp în spațiu este locul unde se află corpul
Traiectoria este linia de-a lungul căruia s-a mișcat corpul
Deplasarea este segmentul orientat de dreapta de la poziția inițială spre cea finală
viteza este mărimea ce caracterizează rapiditatea mișcării
360km/h 100m/s
72km/h 20m/s
viteza se calculează după formula V=d/t
distanța se calculează după formula d=Vt
timpul se calculează după formula t=d/V
Mișcarea și repausul sunt relative
La mișcarea rectilinie uniformă drumul parcurs este egal cu deplasarea
Un schior pargurge 40m în 10s, care este viteza lui 4m/s
Un tren se mișcă cu uniform timp de 30s cu viteza de 72km/h, ce distanță parcurge trenul 600m
În cât timp o plută parcurge 30km dacă viteza este 1m/s 30000s
Created by: angelareulet
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