Номер 13, страница 184 - гдз по английскому языку 11 класс (enjoy english) учебник Биболетова, Бабушис

Appendix 2. Is Physics difficult? - номер 13, страница 184.

Условие.

13 Read the tale and guess which of Newton's laws it's connected with.

Just then, a light feather, obviously dropped by one of the large birds, moved slowly past him. It was descending gradually and almost vertically as the air was absolutely still. The python couldn't take his eyes off it. It reminded him of something. Yes, it was at school. The python didn't like school, but his mother had insisted... True, he hadn't benefited much from the experience. But that feather... it was connected to those old school days somehow. Yes, the python recalled it now: the physics teacher had once demonstrated a fascinating experiment to the class. He had brought a long glass tube to show the class and said that there was a vacuum inside. But the python didn't see any vacuum, just a white feather and a grey stone. The teacher turned the tubes upside down and, naturally, both objects started to fall. Amazingly, the stone reached the bottom of the tube at the same moment the feather did! This impressed the young python and stuck in his memory but it didn't lead to any desire to look into the matter further. Now the python wished he had been more curious about physics and had bothered to ask questions once in a while. Didn't that experiment mean that when anybody was in the air with no firm ground below, a body could float just like a light feather ...even such a big body, like his own, the python's? The birds seemed to have discovered this secret very long ago and kept it from everyone. He must try it for himself...

The big old python enjoyed basking in the sun on the very top of the high rock. He spent days and weeks there — it was a wonderful way to pass the time. Lazily his eyes followed the big birds flying high in the sky. He enjoyed watching them. Large and impressive, they floated smoothly almost beside him. He felt a kind of unity with the birds. They had lots in common, didn't they? Like him, they were far from the ground below. Just like him, they were much closer to the sky than all those miserable creatures that lived at the foot of the rock. There was only one thing that kept him apart from their community, and it always left a strange bitter aftertaste in his mouth. Yes, they could fly. They knew how to do something he would never be able to experience. Flying, being in the air without the ground supporting you — how would it feel?

For the first time in his life the python felt excited. He kept looking down from the rock, his eyes still on the tiny white spot that was the feather far below him...

Решение.

Решение 2.

13 Прочитайте сказку и угадайте, с каким из законов Ньютона она связана.

Ответ:

The tale is connected with Newton's Second Law of Motion and his Law of Universal Gravitation. The experiment described, where a feather and a stone fall at the same rate in a vacuum, demonstrates that acceleration due to gravity is the same for all objects, regardless of their mass, in the absence of air resistance.

Сказка связана со вторым законом движения Ньютона и его законом всемирного тяготения. Описанный эксперимент, в котором перо и камень падают с одинаковой скоростью в вакууме, демонстрирует, что ускорение свободного падения одинаково для всех объектов, независимо от их массы, при отсутствии сопротивления воздуха.