Предмет: Физика, автор: Masee

Тело массой 1 кг движется по плоскости, при этом его координаты от времени зависят следующим образом: x(t)=4t+3, y(t)=-3t^2-1. При этом модуль равнодействующей силы равен
1) 6 2) 10 3) 1 4) 4

Ответы

Автор ответа: Просветитель
0
Ответ: 1) 6 Н.
По Х движение равномерное, ускорение а=0. По У будет а=-6м/с2. Умножим его на 1 кг и по второму закону Ньютона получим 6 Н
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Предмет: Английский язык, автор: apievaajzamal10
Срочно 1.How many days each week is Amberton farm open?

2.What do they have at 1 o’clock?

3.Where do they eat and drink in the afternoon?

4.Where do young children feed the ducks?

5.What time does the first visitor probably arrive?​Do you live in a town or a city?


These days, most people do. Maybe you've gota
cat or a dog or a hamster, but you probably don'
see farm animals very often and you don't know
what life is like on a farm.
b Amberton Farm is a city farm, and it's open to the
public seven days a week, 365 days a year.Mr and Mrs Collins and all the farm workers here
at Amberton Farm welcome everyone: parents,
children, teachers, students. While you're here,
you're sure to learn a lot about how a farm works -
and have a great time too!
Farm life starts early (at 5.30am!) so our doors open
early too. People start arriving at six o'clock. They
stay all day and leave at seven in the evening.
What do they do and what do they learn while
they're here? Well, they don't have a lazy day, that's
for sure! Every day, we feed all the animals, milk
the cows and collect the chickens'eggs. We also
brush the horses, move the sheep to a different
field (Sally the sheepdog makes sure they don't
go to the wrong place!), plant and pick fruit and
vegetables, and lots of other jobs. And the people
visiting us help us do all these things too!
Of course, we don't work all the time. We have a
lovely lunch at one o'clock, and tea and cake in
the afternoon. There's also lots of time to touch
the animals, to see how they live, and to play with
them. Young children love feeding the ducks on
the duckpond. Some older children ride the horses,
or take the goats for a walk. Everyone loves the
baby animals. We've often got chicks, ducklings,
calves, ponies, lambs, puppies and kittens to play
with and look at. And everyone loves stroking Ned,
the old donkey. He doesn't walk or
run much anymore, but he's still
happy and loves all the visitors!​