Answer and Explanation: <u>Centripetal</u> <u>Acceleration</u> is the change in velocity caused by a circular motion. It is calculated as:
v is linear speed
r is radius of the curve the object in traveling along
For its first lap:
After a while:
Comparing accelerations:
<u>With linear speed </u><u>4 times faster</u><u>, centripetal acceleration is </u><u>16 times greater.</u>
The duck at 12m/s has a greater speed than the heron which travels at 10m/s
Contents inside a lava lamp
Answer: A.The moon doesn’t have an atmosphere to burn up the rocks before hitting the surface.
Explanation:
Unlike the Earth, the Moon does not have an atmosphere, this leads to at least to facts:
1) Since the atmosphere (in the case of Earth) is mainly composed of gases (including oxigen) that can make combustion; when a meteor enters in the atmosphere and gets in contact with oxigen it becomes flamable and part of it is burned and separated. Then, if the meteor was large enough, the parts that were not separated will impact on the Earth Surface.
In the Moon, meteors completely impact the surface.
2) In our planet, after the meteorite impact, the crater formed will gradually fade due to erosion caused by the atmosphere. In the case of the Moon, the craters remain intact, since there is not erosion on its surface.
Because of the tension of the rope, the force that the SUV exerts on the trailer is equal and opposite than the force that the trailer exerts on the SUV. This is explained in Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.
