Chapter 4
Motion in Two or Three Dimensions
![Position and Displacement Vectors](https://cloudfront.jove.com/files/media/science-education/science-education-thumbs/12630.jpg)
To describe the motion of an object, one should first be able to describe its position (where it is at any particular time). More precisely, the…
![Average and Instantaneous Velocity Vectors](https://cloudfront.jove.com/files/media/science-education/science-education-thumbs/12631.jpg)
To calculate other physical quantities in kinematics, the time variable must be introduced. The time variable not only allows us to state where an…
![Direction of Acceleration Vectors](https://cloudfront.jove.com/files/media/science-education/science-education-thumbs/12633.jpg)
Acceleration occurs when velocity changes in magnitude (an increase or decrease in speed), direction, or both. Although acceleration is in the…
![Projectile Motion](https://cloudfront.jove.com/files/media/science-education/science-education-thumbs/12634.jpg)
An object thrown in the air follows a parabolic path under the influence of Earth's gravitational force. The motion of such an object is called…
![Projectile Motion: Example](https://cloudfront.jove.com/files/media/science-education/science-education-thumbs/12636.jpg)
The theory of projectile motion is very useful for players of several sports to improve their performance. For example, a javelin thrower needs to…
![Uniform Circular Motion](https://cloudfront.jove.com/files/media/science-education/science-education-thumbs/12637.jpg)
Uniform circular motion is a specific type of motion in which an object travels in a circle with a constant speed. For example, any point on a…
![Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow](https://cloudfront.jove.com/files/thumbs/53745_t.png)
3D-PTV is a quantitative flow measurement technique that aims to track the Lagrangian paths of a set of particles in three dimensions using…
![Visualization of High Speed Liquid Jet Impaction on a Moving Surface](https://cloudfront.jove.com/files/thumbs/52603_t.png)
Two apparatuses for examining liquid jet impingement on a high-speed moving surface are described: an air cannon device (for examining surface speeds…
![Preparation and 3D Tracking of Catalytic Swimming Devices](https://cloudfront.jove.com/files/thumbs/54247_t.png)
Preparation and 3D Tracking of Catalytic Swimming Devices
Free SampleFree access at this time
We report a method to prepare catalytically active Janus colloids that "swim" in fluids and describe how to determine their 3D motion using…