The height above the ground from where the skier start is 11.5 m.
<h3>
Conservation of energy</h3>
The height above the ground from where the skier start is determined by applying the principle of conservation of energy as shown below;
P.E = K.E
mgh = ¹/₂mv²
gh = ¹/₂v²
Thus, the height above the ground from where the skier start is 11.5 m.
Learn more about conservation of energy here: brainly.com/question/166559
Answer:
Explanation:
1. cools quickly on the earth's surface
Extrusive igneous rock
2. cools slowly beneath the earth's surface
Intrusive igneous rock
3. formed from the remains of living organisms
Organic sedimentary rocks
4. formed from pieces of other rocks cemented together
Clastic sedimentary rock
5. formed when dissolved minerals harden
Chemical sedimentary rock
6. formed from heat and pressure
Metamorphic rocks
Surveys are considered the most reliable way to gather data
Answer: Option C
C) accelerated vertical motion and constant horizontal motion.
Explanation:
If there is no air resistance then during the projectile movement the only force that causes an acceleration is the gravitational force.
We know that this force produces an acceleration of 9.8 m / s ^ 2 in the projectile.
As the gravitational force attracts the object towards the earth, then the acceleration that this force produces is always in the vertical direction. In the horizontal direction the object is not accelerated (because there is no air resistance).
Therefore the correct answer is option C.
"accelerated vertical motion and constant horizontal motion".
Acoustic Energy
Sonar uses the echo principle by sending out sound waves underwater or through the human body to locate objects