Caution:  Make sure you set the long 6 inch tube onto the tube stand before and after you do this demo.  Several tubes have been knocked over and broken when this is not observed.  

Set the plastic tube inside the first box and on top of the foam.  Drop the beaker inside the tube and observe that it does not break due to the long stopping time (impulse).  Move the tube over to the second box and on top of the bricks.  Drop the beaker down the tube and observe that the short stopping time (impulse) breaks the beaker.

You can also do this experiment and record the impulse data using the Vernier Force Plate and the Vernier interface.  Place the Plexiglas box onto the force plate.  Put two pieces of wadded up bubble wrap from the box of bubble wrap used for this demo into the end of the Plexiglas tube and set it upright in the box.  The force plate should be on the - 200/850 Newton setting.  Tare the force plate.  Start your data collection and drop the beaker into the tube.  Then take the bubble wrap and the beaker out of the tube and the box.   Next place the box onto the force plate, place the bricks into the box and balance the tube on top of them.  Tare the force plate and repeat the data collection when you drop the beaker.  Compare the two graphs and in particular notice the difference in the time duration of the two collisions.