~ physics question ~

Question

 Anna Litical makes the following claim:

"The vertical velocity (v_y) 1.0 second before reaching the peak is the same size as the vertical velocity (v_y) 1.0 second after reaching the peak. The same is true of the v_y values 2.0 seconds before and after the peak."

 

How much time does it take to reach the peak height? (use seconds)

Answer 1

Hi Ashy A.,

Sorry, your two "conditions" are just symmetry statements about the motion of the ball. They don't furnish any useful data on the ball. Now, if you'd said, "the magnitude of the vertical velocity one second before the apex is the same as the magnitude of the vertical velocity two seconds after the apex", you'd have good grounds for saying that the ball ws just lying there the whole time.

-- Cheers, -- Mr. d.