Speed - the rate of change of position.
<span>Speed = Distance / Time. </span>
<span>Common units utilized for speed are meters per second (m/s) or miles per hour (mi/h). </span>
<span>Velocity - the rate of change of position. </span>
<span>Velocity = Displacement / Time. </span>
<span>Common units utilized for velocity are meters per second (m/s) or miles per hour (mi/h). </span>
<span>The main difference between speed and velocity is that speed is a scalar quantity (does not depend on direction) whereas velocity is a vector quantity (which does depend on direction). </span>
<span>Acceleration - Change of velocity over time. </span>
<span>Force = Mass x Acceleration. </span>
<span>Acceleration = Force / Mass. </span>
<span>Common used units of acceleration are meters per second squared (m/s^2). </span>
<span>Hope that helped :)</span>
Answer:
The answer is 631.157
Explanation:
The question requested that the answer to the subtraction of 26.543 from 657.70 must be written using significant figures.
Here are a few tips about how to Identify significant figures.
1) It should be noted that <u>the number "0" is what is usually (but not always) affected</u> while trying to identify significant figures. Hence, <u>all other numbers/digits are always significant</u>. For example, 26.543 has five significant figures.
2) The zeros found between these "other numbers/digits" are also significant. For example, 2202 has four significant figures.
3) In the case of a decimal, the tailing zeros or the final zero is also significant. 657.70 and 657.07 have five significant figures.
Now, back to the question
657.70 - 26.543 = 631.157.
Our final answer does not have a zero, hence all the digits (six) are significant.
Reduce the effort needed to move a load vertically
Answer:
![W=-\int_{0}^{50}[150-0.5y]dy](https://tex.z-dn.net/?f=W%3D-%5Cint_%7B0%7D%5E%7B50%7D%5B150-0.5y%5Ddy)
Explanation:
the integral for the work is:
the work is against the gravitational force. While the coal is going up, M(y) is changing due to the length of the cable is lower. We can describe this by using the following formula
Thus , the integral for the work is:
hope this helps!!
Answer:
Atomsphere
Explanation:
Without our atmosphere, there would be no life on earth. Scientists divided the atmosphere into four layers according to temperature: troposphere, stratosphere, mesosphere, and thermosphere.
