Солнце встало 5.30,а зашло 20.20. Длительность дня

Transform the sentences so that the second sentence has a similar meaning to the first sentence.
переделайте предложения вот пример
0.People think that the Scandinavians are reserved and slow.
The Scandinavians are thought to be reserved and slow
1.Many people consider that Spain and Portugal are good places for summer vacations.
2.We know Christmas is the most popular holiday in Britain and the USA
3.Many people think that patriotic symbols are very important for national celebrations.
4.They say that Thanksgiving Day unites many American families for a thanksgiving dinner.
5.Some people suppose that the British Queen is the most important symbol of the country.
6.Many people consider that British football is the best.
7.They say Americans have more national celebrations that any other nation

Центростремительное ускорение точек колеса автомобиля, соприкасающихся с дорогой, равно 5 м/с^2. Найти скорость автомобиля, если радиус колеса 0,5 м.

Через сколько времени после начала аварийного торможения остановится автомобиль, движущийся со скоростью 72 км/ч, если коэффициент сопротивления равен 0,5?