Summary14 - Summary Lecture 14 Definition of Impulse J = F...

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Unformatted text preview: Summary Lecture 14 Definition of Impulse J = F Δt Useful in collisions with a time-varying force. F is the average force during the collision, Δt is the duration of the collision. Definition of Linear Momentum Li p = mv mv The momentum p is a vector in the direction of the velocity. the velocity. Impulse-Momentum Theorem Impulse = Total momentum change Total momentum change J = F Δt = Δp ( = mvFinal – mvInitial) Force and Momentum Force and Momentum A net force acting on a body changes its momentum F = Δp/Δt (this is another form of Newton’s 2nd law) Momentum Conservation (in an isolated system) LINEAR MOMENTUM IS CONSERVED pInitial = pFinal Example: Collision of 2 (hard) Objects Collision of (hard) Objects m1v1 + m2v2 = m1v1’ + m2v2’ ...
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This note was uploaded on 12/06/2011 for the course PHYSICS 111&112 taught by Professor Unknown during the Spring '11 term at Ohio State.

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Summary14 - Summary Lecture 14 Definition of Impulse J = F...

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