Тело, брошенное горизонтально с высоты h=80 м, упало на землю на расстоянии l=60 м по горизонтали. Модуль перемещения тела за время,в течение которого модуль его скорости увеличился в n=2 раза,составит ...м

Сторона ромба равна 20 ,а диогональ 32. Найдите площадь ромба. Плиз)))

На нити, выдерживающей натяжение 20 Н, поднимают груз массой 1 кг из состояния покоя вертикально вверх. Считая движение равноускоренным, найдите предельную высоту, на которую можно поднять груз за 1 с так, чтобы нить не оборвалась.

Пере фразируйте следующие предложения, употребляя сложное дополнение с причастем. 

E.g. He was reading in the garden. She saw him. She saw him reading in the garden.

1. We noticed a man. The man was cleaning his shoes.

2. He saw two girls. They were dancing on the stage.

3. She watched the children. They were running and playing in the garden.

4. I saw her. She was arranging her hair.

5. We saw our neighbor. He was listening to the latest news on the radio.

6. The cat was rubbing itself on my leg. I felt it.

7. We noticed a group of people. They were digging potatoes in the field.

8. Didn't you see her? She was smiling at you.

9. The girl was singing. I heard her.

10. They were talking about computers. He heard them.

11. You were walking along the street yesterday. I saw you.

1/5кг=___г ? выразить в указ.един.измер