Предмет: Физика, автор: Amr97

Помогите решить! !!! Имея начальную скорость 18 км/ч и двигаясь равноускоренно, трамвай за 10 секунд прошел путь 125 метров. Какую скорость он приобрел в конце пути

Ответы

Автор ответа: Sencha1

u=uo+at
a-?
2S=2uot+at^2
250=100+100a
150/100=a
a=1,5 м/с^2
u=5+1,5*10=20 м/с
Есть другой способ намного короче.
S=(u+uo)t/2
2S/t=u+uo
2S/t-uo=u
25-5=20 м/с
Ответ:20 м/с

Автор ответа: Amr97

спасибо уже решил) Есть более легкий способ)

Автор ответа: Sencha1

То есть уже третий? Ну легче второго способа я не знаю,откроете секрет? Интересно просто

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