Cells never reach equilibrium.

Experiment

After the scientist make a hypothesis, they perform an experiment to collect data.

By the law of reflection which says that the angle of reflection is equal to the angle of incidence, which in other words says, sin x = sin y, it can be said, based on the given that the angle of reflection is also equal to the angle of incidence of 35 degrees

**Answer:**

**The object displacement is 0 meters.**

**Explanation:**

Because the expression for the object position as function of time is:

At t= 3.0=t2 seconds the x-position of the object is:

and at t=1.0=t1 seconds the x-position of the objects is:

The total displacement () of the object between t2 and t1 is the difference between x(3.0s) and x(1.0s):

The displacement of the object is zero!!!

The way I look at these things is like this:

-- The runner covered 12 meters in 4 seconds.

Average speed = 3 meters per second.

-- Speed at the beginning = zero.

In order to make the average 3, Speed at the end = 6 meters per second.

-- Speed increased from zero to 6 meters per second in 4 seconds.

It must have increased 1.5 meters per second each second.

That's choice-#2.