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المتر على الثانية المربعة هي وحدة التسارع في نظام الوحدات الدولي (SI). كوحدة دولية مشتقة مركبة من الوحدة الأساسية للطول ، المتر ، والوحدة الأساسية للزمن ، الثانية . يرمز لها بعدة رموز من بينها m ...
Cambridge Dictionary Labs中如何使用“metre per second”的例句
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The joule (pronounced / ˈdʒuːl /, JOOL or / ˈdʒaʊl / JOWL; symbol: J) is the unit of energy in the International System of Units (SI). [1] It is equal to the amount of work done when a force of one newton displaces a mass through a distance of one metre in the direction of that force. It is also the energy dissipated as heat when an ...
The metre is the length of the path travelled by light in vacuum during a time interval of 1 / 299 792 458 of a second. This definition fixed the speed of light in vacuum at exactly 299 792 458 metres per second [121] (≈ 300 000 km/s or ≈1.079 billion km/hour [123] ).
Metre per second squared. Metres per second squared is the SI derived unit of acceleration (scalar) and (vector), defined by distance in metres divided by time in seconds and again divided by time in seconds. The unit is written in symbols as m/s 2 or m·s -2 or m s -2. It may be better understood when phrased as " metres per second, per second ...
The first equation shows that, after one second, an object will have fallen a distance of 1/2 × 9.8 × 1 2 = 4.9 m. After two seconds it will have fallen 1/2 × 9.8 × 2 2 = 19.6 m; and so on. The next-to-last equation becomes grossly inaccurate at great distances. If an object fell 10 000 m to Earth, then the results of both equations differ ...
