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Yes, it is.
According to the World Pool-Billiard Association, a pool ball is 2.25 inches in diameter, and has a tolerance of +/- 0.005 inches. In other words, it must have no pits or bumps more than 0.005 inches in height. That's pretty smooth. The ratio of the size of an allowable bump to the size of the ball is 0.005/2.25 = about 0.002. The Earth has a diameter of about 12,735 kilometers (on average, see below for more on this). Using the smoothness ratio from above, the Earth would be an acceptable pool ball if it had no bumps (mountains) or pits (trenches) more than 12,735 km x 0.00222 = about 28 km in size. The highest point on Earth is the top of Mt. Everest, at 8.85 km. The deepest point on Earth is the Marianas Trench, at about 11 km deep. Hey, those are within the tolerances! So for once, an urban legend is correct. If you shrank the Earth down to the size of a billiard ball, it would be smoother.
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∙ 15y ago
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What does the black 8 ball say in billiard pool?
The black 8 ball during a billiard pool game told the teenage players, "See, being called on last to be on the team is sometimes the best outcome because you win!The black 8 ball during a billiard pool game proudly yelled, as he slid into the pocket that the player correctly called, "I've rolled longer than the stripes and solids to get here."The black 8 ball during a billiard pool game said, "Having a number painted on your belly sure makes people avoid you...that is, until one player finally calls your name!"
Does a ball roll faster on grass or gravel?
A ball typically rolls faster on gravel than on grass due to the smoother surface and reduced friction on gravel. Grass can create more resistance and slow down the ball's movement.
Why does a ice-hockey puck have less friction than a ball rolling on the ground?
An ice-hockey puck has less friction than a ball rolling on the ground because ice surfaces are smoother and provide less resistance compared to the irregularities on the ground that increase friction. Additionally, the material of the ice-hockey puck and the ice surface are designed to have low friction properties to allow for smoother and faster movement on the ice.
Does a ball roll better on grass than dirt?
A ball typically rolls better on grass compared to dirt because grass provides a smoother and more even surface for the ball to roll on. Dirt surfaces may have more irregularities and bumps that can hinder the ball's movement.
Why does a ball move faster on a sidewalk but not grass?
A ball moves faster on a sidewalk than on grass because the surface of the sidewalk is smoother and provides less resistance. The grass surface is uneven and offers more friction, which slows down the ball's movement.
Can you give me a sentence using the word smoother?
A smoothie is smoother than a malt.
Is Earth the same size as a soccer ball?
No, Earth is bigger than a soccer ball. The analogy you may have seen is that if Earth were the size of a soccer ball, the Moon would be the size of a tennis ball, and would orbit the Earth at an average distance of 22 feet away.
Will a billiard ball turn into ashes if it gains the speed of light?
We know from the past 110 years of Physics that it's not possible for a billiard ball to accelerate to the speed of light. We also know from the same physics that if the ball were traveling at the speed of light, its mass would be infinite, and its thickness in the direction of its motion would be zero. There's no hint of any reason whatsoever that it should turn to ashes, or to any other substance, other than what it was last time it dropped into the side pocket.
Why it is smoother to ride a bicycle on a paved road than on a dirt road?
Because pavement is smoother.
What is the circumference of the Earth?
The equatorial circumference of the Earth is about 40,075 km (24,901 m).The polar circumference of the Earth is about 40,008 km (24,860 m).More Precisely:Earth is not a perfect sphere, but is "flattened" at the poles. Its shape is described as an oblate spheroid. So, the Earth's circumference is about 68 km (41 m), larger around its bellythan around its poles.This difference is small enough that, were the earth shrunk down to the size of a billiard ball, it would be more perfectly round than most billiard balls.Caveat: The numbers for circumference are always approximations because Earth's surface is irregular and constantly changing. The tidal bulging (constantly shifting) is a dynamic factor. Polar measurements vary with longitude. So these approximations can differ by a kilometer or two.
Why does a ball roll farther ondirt than grass?
A ball rolls farther on dirt than grass because dirt provides less resistance and friction to the ball's movement. Grass has more friction due to the texture and density of the grass blades, which slows down the ball's motion. The smoother surface of dirt allows the ball to travel with less hindrance, resulting in a longer distance rolled.
Does a ball roll faster on carpet grass or sidewalk?
A ball would generally roll faster on a sidewalk than on carpet grass due to the smoother and harder surface of the sidewalk providing less friction and resistance. Carpet grass has a rougher texture that can slow down the ball's movement.
