Problems 1 through 3 show a partial motion diagram. For...

Name: Problem 1, Chapter 4: Physics for Scientist and Engineers: A Strategic Approach
Uploaded: 2020-06-13T23:22:07-08:00
Duration: 3 min 22 s
Channel: Lisa Tarman
Description: Problems 1 through 3 show a partial motion diagram. For each: a. Complete the motion diagram by adding acceleration vectors. b. Write a physics problem for which this is the correct motion diagram. Be imaginative! Don't forget to include enough information to make the problem complete and to state clearly what is to be found. (FIGURE CANNOT COPY)

Problems 1 through 3 show a partial motion diagram. For each: a. Complete the motion diagram by adding acceleration vectors. b. Write a physics problem for which this is the correct motion diagram. Be imaginative! Don't forget to include enough information to make the problem complete and to state clearly what is to be found. (FIGURE CANNOT COPY)

Problems 1 through 3 show a partial motion diagram. For each:
a. Complete the motion diagram by adding acceleration vectors.
b. Write a physics problem for which this is the correct motion diagram. Be imaginative! Don't forget to include enough information to make the problem complete and to state clearly what is to be found.
(FIGURE CANNOT COPY)

Key Concepts

Acceleration Vectors

Acceleration vectors are graphical representations that indicate the magnitude and direction of an object's acceleration. They are essential in illustrating how the velocity of an object is changing, whether it is speeding up, slowing down, or changing direction. Including acceleration vectors in a motion diagram provides clarity on the forces acting on the object and how these forces influence its overall motion.

Kinematics Problem Formulation

Kinematics problem formulation involves creating a complete and self-contained description of a physical scenario by specifying initial conditions, the forces or accelerations acting on an object, and the desired quantities to be found. This process often involves integrating diagrammatic representations, such as motion diagrams with acceleration vectors, into the problem statement to help visualize and solve the motion of the object.

Motion Diagram

A motion diagram is a visual representation of an object's position at discrete time intervals. It typically includes points or markers showing where the object is located as time progresses, and it can be supplemented with velocity and acceleration vectors to represent changes in the object’s motion. This helps in understanding the dynamics of the object, such as its speed and direction.

Transcript

00:01 We're given this motion diagram.

00:04 This is the position of some ball and the red are the velocity vectors and we're supposed to add acceleration vectors when you tell here, it's hard to tell from the diagram, but these are getting shorter and shorter so it's getting slower and slower and then here they're getting longer and longer so it's getting faster and faster here on the curve it kind of looked like they were the same length to me so i'd say that's constant speed, but you would have a centripetal acceleration because it has a curved path.

00:32 So i'm going to add blue vectors.

00:34 I'm just going to kind of add them in here, since they're right on top.

00:36 Here we're getting slower and slower.

00:38 So my acceleration is opposite of the motion.

00:43 Here we're getting faster and faster, so my acceleration is the same direction as the motion.

00:49 I can't really tell.

00:50 I'm assuming it's constant acceleration.

00:52 Here i would need to be toward the middle of a curve.

00:55 Imagine this is the big circle.

00:57 There's kind of the center of the circle.

01:00 So here i'm kind of going towards.

01:03 That and i might have one here that's kind of in between where here it's starting to curve but it's still slowing down so imagine taking a combining these two vectors and something like that and same thing here imagine combining these two vectors for something in between kind of like that okay so that was part a adding acceleration vectors part b we're supposed to make up a problem that would go along with this motion...

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