It is the light that coming from the sun
The rocks which are porous depending on the degree of cementation
include the following:
<h3>What is Porosity?</h3>
Porosity is the measure of empty spaces in a particle which permits the
passage of compounds such as water etc.
The rocks mentioned above have a lot of empty spaces which permits
other substances to pass through them. The remaining rocks are
composed of tightly held grains which reduces their porosity.
Read more about Porosity here brainly.com/question/8757684
Answer:
0.15 m/s² east
Explanation:
We can use following kinematic equation for Uniformly-Accelerated Motion to solve this problem:
<h3>v = v₀ + a × t</h3>
Where <em>v</em> is the final velocity, <em>v₀ </em>is the initial velocity, <em>a</em> is the acceleration and <em>t </em>is the time interval.
<u>The data of the problem is:</u>
- v₀ = - 100km/h (remember to have a frame of reference, I decided traveling west will be towards the negative values and traveling east will be positive).
- v = 0 km/h (the car comes to a full stop)
- t = 3 min
<u>Replacing the data in the formula</u>:
0 km/h = -100 km/h + a × 3 min
It's very important to use the same units when solving problems. I will convert kilometer to meters and hour or minutes to seconds, because the answer choices are given in m/s².
Then:


And considering our frame of reference, a positive sign indicates that the acceleration is east-bound.