Answer:
An Atom's individual speed will change as it collides with other atoms, so we have to use an average.
Explanation:
In a gas a single atoms does an assortment of things during its time in the gas—sometimes it collides with an other atom gaining a lot of speed, sometimes losing a lot of speed in the collision, and sometimes just moving freely. Therefore: the motion of one individual atom is unpredictable, and it cannot be representative of all the the atoms in a gas, which is why we must average over all speeds of all atoms to find an average speed that allows us to calculate other quantities like temperature and pressure of the gas.
Hence, the second option <em>"an Atom's individual speed will change as it collides with other atoms, so we have to use an average" </em>stands correct.
Absolute, Atmospheric, Differential, and Gauge Pressure
The best answer is D.
Stress is a force that acts on rock to change its shape or volume. Because stress is a force, it adds energy to the rock, which is stored in the rock until either the rock breaks or changes shape.
There are three kinds of stress, namely shearing, tension and compression.
Shearing- force that pushes a mass of rock in two opposite directions and can cause rock to break and slip apart or change shape.
Tension - force that pulls on the crust, stretching rock so that it becomes thinner in the middle.
Compression - force that squeezes rock until it folds or breaks
Since direction is part of velocity, and the object is moving in a circle, its velocity is constantly changing.
