Swings and merry-go-rounds do not exhibit linear motion. Instead, swings exhibit periodic motion as they swing back and forth, while merry-go-rounds demonstrate rotational motion as they spin around a central point, both involving circular paths.
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A reference point is a fixed location or object used to determine the position or motion of another object. It provides a basis for measuring distance, direction, and movement, helping to describe the location of an object relative to it.
Tape and rod measure length like a scale but are more flexible and suited for different contexts. “Char angula” refers to an old measurement unit, meaning “four fingers” or roughly 7-10 cm, used in traditional contexts.
The meter is convenient for measuring lengths like a railway track, but not for smaller measurements such as the thickness of a book page. For small lengths, units like millimeters are more precise.
If the ends of the scale are broken, measure from a known reference point to a point along the scale. Use a piece of string or another ruler to measure the length accurately from these points.
When reading a scale, position your eye perpendicular to the scale’s markings to avoid parallax error. This ensures accurate measurement by aligning your line of sight directly with the scale’s markings.
Flexible measuring devices, like tape measures, can easily conform to various shapes and surfaces. This adaptability allows for accurate measurements of irregular or curved objects, which rigid devices cannot measure effectively.
Without windows, you can’t directly observe the ship’s movement. However, if you drop an object and it falls straight down, the ship is moving. In a stationary ship, the object would appear to drift.
To express the distance between your school and home in meters, convert the distance from kilometers to meters, multiply by 1000. The distance between your school and home is 1.5 kilometers, which equals 1500 meters (1.5 km × 1000 = ...
Wrap a flexible measuring tape around the curved base of the tumbler or bottle to measure its circumference. Record the length in centimeters or millimeters, ensuring the tape is snug and level.