# Differences between position distance and displacement lab

Published в Inter finanzas forex | Октябрь 2, 2012

Students will explore and discover the difference between position, distance, and displacement using graphs of their own motion. Displacement: a vector representing a change in position. A displacement is measured in length units, so the MKS unit for displacement is the meter (m). We. It is understood as the distance and direction traveled by an object taking into account its initial position and its final position, always in a straight line. HARRY DENT CRYPTOCURRENCIES

Calculating Displacement Anything that moves in relation to a fixed reference frame is covering distance. How is this possible? Both distance and speed are scalar quantities, so they are naturally found together. Because displacement is a vector quantity, it, not distance, must be used to find average velocity, another vector quantity. All you'd have to do is make sure you pulled over in the same spot the officer first spotted you, and you could argue that, the distance of your trip aside, your displacement is clearly zero, rendering your velocity zero by definition.

Okay, maybe not such a good idea for various reasons! Distance and Displacement: Examples Consider the following scenarios: A car drives three blocks north and four blocks east. The displacement vector points from initial position to final position. A person walks north from their house meters to the park, and then returns home before continuing 20 meters south to check the mail.

The negative sign is important because a frame of reference was chosen to situate the park in the positive direction on the x-axis. Figure 2. Why or why not? It is related to other English words, such as cinema movies, or moving pictures and kinesiology the study of human motion.

Your classroom can be used as a reference frame. In the classroom, the walls are not moving. Your motion as you walk to the door, can be measured against the stationary background of the classroom walls. You can also tell if other things in the classroom are moving, such as your classmates entering the classroom or a book falling off a desk. You can also tell in what direction something is moving in the classroom. If you remained seated as your classmates left the room, you would measure their movement away from your stationary location.

If you and your classmates left the room together, then your perspective of their motion would be change. You, as the reference frame, would be moving in the same direction as your other moving classmates. As you will learn in the Snap Lab, your description of motion can be quite different when viewed from different reference frames.

Relate this to the origin of a coordinate grid. Engage students in a discussion of how it is the difference in motion between the reference frame of the observer and the reference frame of the object that is important in describing motion. The reference frames used in this chapter might be moving at a constant speed relative to each other, but they are not accelerating relative to each other.

Demonstrate the difference by having one student stand at the front of the class. Explain that this student represents the background. Walk once across the room between the student and the rest of the class. Ask the student and others in the class to describe the direction of your motion. The class might describe your motion as to the right, but the student who is standing as a background to your motion would describe the motion as to the left. Conclude by reminding students that the reference frame is the viewpoint of the observer, not the background.

For example, slide a book across a desk. Ask students to describe its motion from their reference point, from the book's reference point, and from another student's reference point. Which reference frame is correct? Stand a couple of meters away from your partner. Have your partner begin bouncing the basketball while standing in place. Describe the motion of the ball. Next, have your partner again bounce the ball, but this time your partner should walk forward with the bouncing ball.

You will remain stationary.

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Position, Distance \u0026 Displacement - Explained

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POSITION DISTANCE AND DISPLACEMENT IN PHYSICS

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