Предмет: Физика, автор: petersonmaksim6

Велосипедист проїхав 5 км зі швидкістю 20 км/год, а потім ще 25 км проїхавза 1 год. Якою була середня швидкість руху на всьому шляху? (в км/год)

Ответы

Автор ответа: krivoruchkonazzy

Дано:

t1=5 км

V1= 20 км/год

t2=25 км

----------------------

Vc - ?

Розв'язання:

V1= 20 км/год

V2 = 25 км/год

Vcер.= (20 км/год + 25км/год):2=45км/год:2 = =22,5(кмгод)

Відповідь: 22,5 км/год

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