# PART D A STUDENT SOLVING A PHYSICS PROBLEM TO FIND THE UNKNOWN

Introduction:

Physics is a subject that deals with the study of matter and energy and their interactions. It is one of the most important branches of science that has contributed significantly to the progress of modern technology. Physics problems can be challenging, but with the right approach, they can be solved easily. In this article, we will be discussing the steps involved in solving a physics problem to find the unknown.

Step 1: Understand the Given Problem

The first step in solving a physics problem is to understand the given problem. Read the problem thoroughly and identify what is being asked. Also, identify what is given and what needs to be found.

For example, consider the following problem:

“A car moves with a speed of 20 m/s. What is the distance traveled by the car in 5 seconds?”

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Here, the given parameters are the speed of the car and the time it travels. The unknown parameter is the distance traveled by the car. Therefore, we need to find the distance traveled by the car.

Step 2: Identify the Relevant Physics Concepts

The next step is to identify the relevant physics concepts that are related to the given problem. For example, the following concepts are relevant to the above problem:

Distance formula: Distance = Speed x Time

Step 3: Draw a Diagram

Drawing a diagram can help you visualize the problem and understand it better. It can also help you identify the relevant physics concepts and their relationships.

For example, in the above problem, you can draw a diagram like this:

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—-> (20 m/s)
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Here, the arrow represents the direction of the car’s motion, and the vertical lines represent the time traveled.

Step 4: Apply the Relevant Physics Concepts

Now that you have identified the relevant physics concepts and drawn a diagram, it’s time to apply the concepts to solve the problem.

Using the distance formula, we can find the distance traveled by the car as follows:

Distance = Speed x Time
Distance = 20 m/s x 5 s
Distance = 100 m

Therefore, the distance traveled by the car in 5 seconds is 100 meters.