Два мяча прижаты друг к другу и мгновенно отпущены. Первый мяч отскочил за некоторое время в горизонтальном направлении на 1,2 м, а другой за это же время на 1,5 м. Найти отношение кинетической энергии первого мяча к энергии второго в момент их разъединения

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Is there anything more important than health? I don't think so. "Health is the greatest wealth," wise people say. You can't be good at your studies or work well when you are ill.

If you have a headache, heartache, toothache, backache, earache or bad pain in the stomach, if you complain of a sore throat or a bad cough, if you run a high temperature and have a bad cold in your head, or if you suffer from high or low blood pressure, I think you should consult a doctor. The doctor will examine your throat, feel your pulse, test your blood pressure, take your temperature, sound your heart and lungs, test your eyes, check your teeth or have your chest X-rayed.

After that he will prescribe some treatment, pills, tablets or some other medicine which we can buy at the chemist's. He will recommend you to stay in bed for some time, because there might be serious complications. The only thing you have to do is to follow his recommendations.

Speaking about doctors' recommendations, I can't help telling you one funny story.

An old gentleman came to see the doctor. The man was very ill. He complained of weakness, insomnia, memory loss and serious problems with his heart, lungs and liver. The doctor examined the patient and said that no medicine could cure his desease.

Do you want to know what the doctor's advice was?

He told his patient to go to a quiet place for a month and have a good rest. He also advised him to eat a lot of meat, drink two glasses of red wine every day and take long walks. In other words, the doctor recommended him to follow the rule: "Eat at pleasure, drink with measure and enjoy life as it is."

The doctor also said that if the man wanted to be well again, he shouldn't smoke more than one cigarette a day.

A month later the gentleman came into the doctor's office. He looked cheerful and happy. He thanked the doctor and said that he had never felt a healthier man.

"But you know, doctor," he said, "it's not easy to begin smoking at my age."

1)Троллейбус, Трогаясь с места от остановки с ускорением 0.8 м/c(в квадрате), прошёл путь 50 м.Какую скорость он приобретёт в конце этого пути?(прозьба указать решение)

2)Мотоциклист движется по закруглению дороги радиусом 80м.Центростремительное ускорение состовляет 2 м/с(в квадрате).Расчитаёте линейную скорость движения мотоциклиста ( в м/c и в км/ч)(прозьба указать решение)

3) Чему равна первая космическая скорость для луны?Радиус луны равен 1700 км, масса 7.35х10(в 23 степени).Сравните первую космическую скорость тула вблизи поверхности земли(прозьба указать решение)

4) Определить ускорение свободного падения на поверхности Юпитера, если известно ,Что радиус птанеты раве 7,13х10(в 7 степени)м,а его масса равна 1,9х10(в 27 степени)(прозьба указать решение)