First, it shows that the horizontal and vertical motion in projectile motion are independent. That is, ... But what I want is the vertical component of the air resistance.

A new analysis of GPS data has revealed new areas of motion up and down the roughly 800-mile-long fault that extends as far north as Eureka down to Baja California.

Physicists at Canada’s University of Waterloo have achieved something extraordinary. They’ve made a ball roll vertically down ...

In addition, the horizontal component of acceleration of that point is also zero (the vertical component of acceleration is NOT zero, however). For the velocity problem, write down the velocity ...

The vertical component of this total inclined slip on the fault that dips to the northeast at an angle of about 10 or 15 degrees is probably on the order of two meters.

Although this mass is moving in a circle, it's just a horizontal circle. There is no motion and no acceleration in the vertical direction. This means the net force in the y-direction must be zero.