Answer:
Explanation:
The force of kinetic friction on the block is defined as:
Where 
is the coefficient of kinetic friction between the block and the surface and N is the normal force, which is always perpendicular to the surface that the object contacts. So, according to the free body diagram of the block, we have:
Replacing this in the first equation and solving for :
You have it exactly backwards.
IN ORDER TO run a certain distance in less time,
you must increase your speed. That's the only way.
Answer:
The distance that the racecar traveled is indeed 500m. But at the end of the lap, it is right back where it started. So overall, it has been displaced 0m.
Explanation:
Answer:
To create this comic strip you can use a narration describing each step and illustrate each one with one image or drawing.
Creating a comic strip involves using images and short texts to explain a specific idea or phenomenon. In the case of the process for a meteor to enter Earth you can use the following ideas.
A meteoroid approaches the Earth at high speed and draw a meteor traveling near to different planets and approaching Earth.
What is that? and draw the Earth wondering who or what is approaching.
The meteoroid enters the atmosphere of the Earth and becomes a meteor and draw the rocky body burning
The rocky body crashes with the surface becoming a meteorite and draw the zone where the meteorite crashed.
Explanation:
Answer:
7.23407 
Explanation:
(I will not include units in calculations)
I'm assuming FBD's are already drawn, so I will work from there.
Let the 2.2kg block equal 
, and the 20kg block equal 
.
Summation equation for : 
, 
Summation equation for : 
Torque Summation Equation: 
Do some plugging in with the values given: 
Replace 
with 
, and cancel out the r's.
This step is important: Rearrange the force summation equation to solve for each tension force.
Perform Substitution: 
Now, we need to find the friction force and the horizontal component of the force of gravity.
Note that 
μ
And based on our earlier summation equation: 
First, break 
into x and y components. 
, 
Perform substitution with this and the fact that 
.
Solving for a, plugging in numbers yields an answer of 7.23407
