vela's latest activity
-
I'm shocked that anyone would believe anything on that news channel. -
vela replied to the thread How do I derive an expression for the velocity vector for any α?.You have $$a = v \frac{dv}{dx}$$ where ##x## is the displacement. As the block initially moves to the right, you have ##x=s##, so the...
-
vela replied to the thread How do I derive an expression for the velocity vector for any α?.I assume you're troubled by the fact that when ##\alpha > \pi##, the expression you derived gives you ##v^2<0##. When ##\alpha = \pi##...
-
vela replied to the thread Distance between a Clock's hands when the distance is increasing most rapidly.Consider which way the velocity of the hour hand's tip points at that moment.
-
vela replied to the thread Distance between a Clock's hands when the distance is increasing most rapidly.Without that assumption, the answer would depend on the particulars of how you model the movement of the hands. How could you answer the...
-
vela replied to the thread Why do we spend so little time learning grammar in college?.It's more convincing to note that Dave's sentence could have been rewritten as "I am embarrassed to say you make a good point."
