Impulse & Momentum

Some brainteasers to get you back in the physics mood ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Let’s start with the semi and the car…. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

And now for car vs. the wall… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Impulse & Momentum Welcome back!! Wednesday January 7th, 2009

Momentum ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Momentum & Force ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Impulse ,[object Object],[object Object],[object Object]

Impulse in Real Life ,[object Object],[object Object],[object Object],[object Object]

Impulse in Real Life Part 2 ,[object Object],[object Object],[object Object],[object Object],Happy Ball I =  p = mv final – m v initial = m( v final - v initial ) = 1 (3 - (-3)) = 6 kg m/s Sad Ball I =  p = mv final – m v initial = m( 0- v initial ) = 1 ( 0- (-3)) = 3 kg m/s V i = -3 m/s V f = +3 m/s

Even more “real life” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],I =  P Same change in momentum  p = F * t F =  p/t Smaller t = large F

Stopping times & distances depend on the Impulse-Momentum Theorem

Momentum is conserved ,[object Object],[object Object],[object Object],[object Object]

Last example… ,[object Object],[object Object],[object Object],[object Object],[object Object],p gun = -p bullet

Impulse & Momentum

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Impulse & Momentum