Answer:
The Answer is gonna be B.
Air warms and rises.
Answer: The speed is not constant and the object is performing a non uniform circular motion
Explanation:
Let's begin by explaining that the centripetal force is proportional to the centripetal acceleration
of an object moving in circular motion is given by the following equation:
Where:
is the velocity
is the radius of the circle
In uniform circular motion, <u>the centripetal acceleration vector is always perpendicular to the velocity vector</u>, hence, the speed (the magnitude of velocity vector) is constant.
However, if a component of the centripetal acceleration vector is not perpendicular (is parallel to the velocity vector): the speed is not constant, the net force acting on the object will not be perpendicular to its motion and we will be dealing with <u>non uniform circular motion.</u>
It is important to note that in this situation the motion needs a tangential force, as well. Being the tangential acceleration
proportional to
and the angular acceleration
:
![a_{T}=a_{g} r](https://tex.z-dn.net/?f=a_%7BT%7D%3Da_%7Bg%7D%20r)
Answer:
50% of it .
Explanation:
50% of it is illuminated by the Sun.
You would divide the meters by the seconds so the answer would be A 9m/s
To find the average of data collected, add all of the measurements: 5.9+6.2+6.3+6= 12.2
Then, divide the total amount by the number of data collected which is 4: 12.2/4= 3.05
The average speed of the runner of the race is approximately 3.05 km/min
Feel free to ask me any other questions you might have :)