Предмет: Физика, автор: sabi66808

Автомобиль, мощность которого 101 л.с. и масса которого 1500 кг, начинает движение из состояния покоя. Какую работу проделает автомобиль в первые 3 секунды, если он движется прямолинейно, а сила сопротивления движению не учитывается? Обрати внимание! 1 л.с. = 735,5 Вт 1) Какова работа, проделанная автомобилем? A Дж (резульмам округли до целого числа).​

Приложения:

Ответы

Автор ответа: 555ai555
0

Ответ:

Объяснение:

P = 101 л.с = 74285.5 Вт

m =  1500 кг

t= 3 с

V = ?

E=?

A=?

a= V/t

P = F*V = m*a*V = m*V*V / t

V^2 = ( P*t / m) = (74285.5*3 / 1500) == 1485,7 м^2/с^2

V = =  √1485,7 == 38,5м/с

E = m*V^2/2  = 1500*1485,7 / 2 = 1114275 Дж

A = P*t = 74285.5 * 3 == 222857 Дж

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