Ball 1 is launched with an initial vertical velocity v₁ = 147 ft/sec. Ball 2 is launched 3.3 seconds later with an initial vertical velocity Determine v₂ if the balls are to collide at an altitude of 246 ft. At the instant of collision, is ball 1 ascending or descending? ly, y Answer: V₂ = 1 ft/sec

What are the Rotational / Translation Motion equations ?

Define translational motion in terms of acceleration.

I am determining the mobility of kinematic chains with the Kutzbach Criterion. I would like help with interpreting the diagrams. When do I count ground as an object and when do I not? On one of the attached photos, there are black blocks. Is this counted as an object or a joint?