Monday, April 27, 2009 - Block 2

Go over Newton's 3rd Law Test

Collected, graded, and went over RA 5.1
Demo with blowpipes and marshmallows to show that longer cannons impart more impulse (same force, longer time) than short cannons.

Demo with force plate. Much larger force when lock knees. The impulse is the same but the time to stop is shorter. If the force varies, you can find the impulse by finding the area under the curve.

Rebounding increases impulse.
Demo with happy/sad balls knocking down block.

Homework: RA 5.2