4. 2D Kinematics
Velocity in 2D
5PRACTICE PROBLEM
The horizontal and vertical components of the velocity of an ice skater performing in a horizontal frictionless arena are shown in the figure below. At t = 0 s, the ice skater's initial position vector is r0 = 0 î + 0 ĵ. Determine the direction of the velocity vector of the ice skater with respect to the positive horizontal direction at time t = 3 s.
![](https://lightcat-files.s3.amazonaws.com/problem_images/1c0f6864b2a73ba6-1677768811815.jpg)
![](https://lightcat-files.s3.amazonaws.com/problem_images/6c4fc4c754778fc5-1677768871931.jpg)
The horizontal and vertical components of the velocity of an ice skater performing in a horizontal frictionless arena are shown in the figure below. At t = 0 s, the ice skater's initial position vector is r0 = 0 î + 0 ĵ. Determine the direction of the velocity vector of the ice skater with respect to the positive horizontal direction at time t = 3 s.