with the origin of the polar coordinates at point O. The animation below shows the results of a calculation of the velocity and acceleration of P using the above polar description of the path ...

The normal component of acceleration for a straight path is ZERO – why?? Watch the animations below. On the left side, P is traveling with a constant speed; as discussed above, there is a 90 degree ...

Everything looks great. But there is a problem. How do you express the velocity of an object in polar coordinates? It's not a simple problem. If a projectile is moving in the x-direction ...