### What height to reach terminal velocity?

A falling person will reach terminal velocity after about 12 seconds, falling some 450 m (about 1,500 ft) in that time. That person will not then fall any faster, so it makes no difference what distance they fall if it is more than 1,500 ft – they will still reach the ground at the same speed.

The acid needs the help of the fiber-rich flesh of the apple. Start stocking your fridge with a variety of crunchy fruits and vegetables. Crunchy foods such as apples, celery, and carrots, act like mini toothbrushes when you chew them. Eating these types of foods can actually help scrub away stubborn stains over time.

Aberdeen is well known as a Granite City. Many of the buildings in Aberdeen are made out of granite. Granite is a hard rock that is often used as a building material. There was once a huge granite quarry in Aberdeen called Rubislaw Quarry.

In the United States, the term “pig” refers to a younger domesticated swine weighing less than 120 pounds (50 kilograms), and the term “hog” refers to older swine weighing more than 120 lbs. In Great Britain all domesticated swine are referred to as pigs.

The motorized vacuum cleaner was invented by Hubert Cecil Booth of England in 1901. As Booth recalled decades later, that year he attended “a demonstration of an American machine by its inventor” at the Empire Music Hall in London.

List of prolific inventors. Thomas Edison was widely known as the world’s most prolific inventor. He held a total of 1,093 U.S. patents (1,084 utility patents and 9 design patents). In 2003, he was passed by Japanese inventor Shunpei Yamazaki.

As it turns out, whether or not we can see the moon during the day depends on the brightness of its light—which is really just the sun’s light reflecting off of the moon’s surface—and the earth’s rotation. In order for the moon to be visible in the sky, it needs to be above the horizon.

Scientists have used DNA to find out that the giant panda is more closely related to the other bears than to the raccoons. Giant pandas are in the family Ursidae with the seven other bear species. Raccoons are in the family Procyonidae, along with ring-tails and coatis.