There will always be a point on the surface that has zero velocity. Again, we associate a tangent vector with each point based on the direction and speed at that point on the ball. Spinning is a ...

A streamline is a line that is tangential to the instantaneous velocity direction (velocity is a vector, and it has a magnitude and a direction). To visualize this in a flow, we could imagine the ...

A streamline is a line that is tangential to the instantaneous velocity direction (velocity is a vector, and it has a magnitude and a direction). To visualize this in a flow, we could imagine the ...

The x-component of velocity for P is known to be a constant ... The rate of change of speed is the projection of this acceleration vector onto the unit tangent direction. We see that for the first ...