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What are the main activities involved in studying physics?

Firlakuza [10]

The main activity that is involved in studying of physics is the study of natural laws. The study of physics has to do with many aspects of the universe. Physics majorly looks into the natural laws that operate in the universe and describe how they affect matter in relation to time.

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4 years ago

Please help

Sergio039 [100]

2) The velocity of the wheel is increasing

3) The slope is the rate of change of velocity

4) The unit of the slope is metres per second squared.

5) Acceleration

6) The symbol used for acceleration is $a$

7) The relationship between velocity and time is $v=gsin \theta t$

Explanation:

2)

The graph in the problem represents the velocity of the wheel as a function of the time.

As we can see from the graph, the velocity is increasing as the time passes. This means that the wheel is accelerating (its velocity is changing constantly)

3)

The slope of the graph represents the rate of change of the velocity.

Mathematically, it can be written as:

$m=\frac{\Delta v}{\Delta t}$

where

m is the slope

$\Delta v$ is the change in velocity

$\Delta t$ is the time interval considered

As we see from the graph, the slope of the line is positive and constant: this means that the velocity is increasing at a constant rate.

4)

The unit of the slope can be determined starting by the units of the two variables involved.

On the y-axis, we have the velocity, which is measured in metre per second ( $m/s$ )

On the x-axis, we have the time, which is measured in seconds ( $s$ )

The slope is the ratio between these two quantities:

$m=\frac{\Delta v}{\Delta t}$

Therefore, the units of the slope are

$m=\frac{[m/s]}{[s]}=[m/s^2]$

So, metres per second squared.

5)

The rate of change of velocity is also known as acceleration.

In fact, acceleration is defined as the ratio between the change in velocity and the change in time:

$a=\frac{\Delta v}{\Delta t}$

By comparing with the formula of the slope in part 3), we see that the two equations are identical, therefore the acceleration corresponds to the slope of the graph.

6)

The symbol used to represent the acceleration is $a$ :

$a=\frac{\Delta v}{\Delta t}$

7)

In any uniformly accelerated motion, the relationship between velocity and time is given by the following suvat equation:

$v=u+at$