1 Fill in much, many, like or would like. 1) 1
a cup of coffee with milk and some cookies, please.
2) How
_pears do you need for the cake?
3) I don't like
sugar in my tea.
4) Jack and Rose
fish very much
5) We don't need
tomatoes for this salad.
6) We
to ask you some questions.
come.
2 Fill in will or be going to.
1) – I want to invite you for a picnic.- OK, I.
2) – Your shirt is dirty. - I know. I wash it today.
3) — What would you like to drink? – I think I
orange juice.
4) – Why did you buy so many tomatoes and cucumbers? —
Because! make a vegetable salad.
have a glass of
3 Complete the sentences with the words from the box.
fried
smells
dairy
grains
bar
plate
1) Milk and yoghurt are
products.
2) Mike isn't hungry because he has eaten a big
3) My father eats
4) Cereals come from
5) I'd like a
of soup for dinner.
6) This pizza
delicious!
of chocolate,
eggs and sausages for breakfast.
E=0.5(m1v1)^2 / (m1+m2);
Сила трения равна F=U(m1+m2)g. Чтобы остановить сцепку, она должна совершить работу, равную кинетической энергии сцепки A=E. Так как работа равна силе, умноженной на перемещение A=FL, то путь до остановки сцепки равен L=E/F; (переведём скорость в м/с, разделив 12/3,6=3,(3) м/с)
L=0.5(m1v1)^2 / (m1+m2)/(U(m1+m2)g);
L=(0.5/Ug)*(m1v1)^2 /(m1+m2)^2;
L=(0.5/(0.05*10))*(50000*3,33)^2 / (50000+30000)^2;
L=2,3 м (округлённо).