7 sinf 4-mashq yechim

7-sinf 4-mashq. 1. sportchi tekis harakatlanib 2,7 km masofani 15 minutda bosib o’tdi. uning tezligini toping. ______________ to’g’ri chiziqli tekis harakatda tezlik formulasi 2. piyodaning tezligi 1 m/s. velosipedchining tezligi 5 m/s. velosipedchi piyodani 20 sekundda quvib o’tdi. velosipedchi va piyoda orasidagi masofani aniqlang. ______________ to’g’ri chiziqli tekis harakatda tezlik formulasi (1)-ifodadan masofani topsak: harakat yo’nalishi bir tomonga yo’nalganligi uchun tezlikni nisbiy deb hisoblaymiz, ya’ni ( ) (3)-ifodani (2)-ifodaga qo’yib; ( ) ifodaga ega bo’lamiz. ( ) ( ) 3. samolyot shahar ustidan 1 minutda uchib o’tdi. agar samolyotning tezligi 900 km/h bo’lsa, uning uchish yo’nalishida shahar kengligi qancha ekanligini aniqlang. ______________ to’g’ri chiziqli tekis harakatd...

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