Speed measures the how fast an object is moving, which is determined by how much distance it travels over an amount of time. Its SI units are m/s (meters per second), however if you use other units in your calculations, the units can be different. A common example of speed measu...
Answer to: What is the speed of (a) the second hand, (b) the minute hand, and (c) the hou hand of a smoothly analog watch? Answer in radians per...
A. 70 kilometers per hour. B. 80 kilometers per hour. C. 90 kilometers per hour. D. 100 kilometers per hour. 相关知识点: 试题来源: 解析 B。解析:原文提到“A car usually travels at a speed of 80 kilometers per hour.”,答案是 B。A、C、D 选项在原文中未体现。反馈...
The speed of a car is 80 kilometers per hour. What is the speed in meters per second? A. 20 meters per second B. 22.2 meters per second C. 25 meters per second D. 30 meters per second 相关知识点: 试题来源: 解析 B。1 千米等于 1000 米,1 小时等于 3600 秒。80 千米每小时换算...
Speed: The speed of a particle is defined as the distance traveled by it in a unit of time (per second). In other words, it can be defined as the ratio of the distance covered by the particle to the time taken by the particle to cover that dist...
If you’re even a bit curious about go-karting as a motorsport, I’m sure you’ve asked yourself the question about how fast they can go. With so many different classes, chassis, and engines to choose from, you may be wondering what the top speed of a go-kart is. The top speed ...
A particle has a relativistic mass if it moves at a very high speed ( near to the speed of light in a vacuum ). On the other hand, if the particle is at rest or moves at a very slower speed than the speed of light in a vacuum, then the mass of the ...
A. 50 kilometers per hour. B. 55 kilometers per hour. C. 60 kilometers per hour. D. 65 kilometers per hour. 相关知识点: 试题来源: 解析 C。解析:原文提到“A bus travels at a speed of 60 kilometers per hour.”,答案是 C。A、B、D 选项在原文中未体现。反馈...
解析 【答案】speed【核心短语/词汇】thespeedof...:...的速度【翻译】-那种汽车的速度是多少?-大约每小时120公里。【解析】根据汉语提示,“速度”译为speed,是不可数名词,没有复数形式的变化,词组thespeedof...:...的速度,结合句意,答案为speed。 反馈 收藏...
Answer to: What is the speed of an electron (in c unit) that has been accelerated to the point at which its relativistic mass is 1.80 times its...