How do I find the object with greatest y value in a group?

Getting Started Newbie Questions
#1

I have objects ‘falling’ down the screen and I want to select the lowest object in the group (highest y value) so I can remove it. How do I do this?

#2

using physics?

Do all objects fall at same speed?

Use a sensor bar across the screen and keep track of the order that objects fall through it, combine this with a counter and should work.

T.

#3

using physics?

Do all objects fall at same speed?

Use a sensor bar across the screen and keep track of the order that objects fall through it, combine this with a counter and should work.

T.