ch09-p052 - 52. (a) The magnitude of the deceleration of...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
(c) Let the speed of car B be v just before the impact. Conservation of linear momentum gives m B v = m A v A + m B v B , or v mv m AA BB B = + = + = ( (1100)(4.6) (1400)(3.9) 7.5 m / s. ) 1400 (d) The conservation of linear momentum during the impact depends on the fact that the only significant force (during impact of duration Δ t ) is the force of contact between the bodies. In this case, that implies that the force of friction exerted by the road on the cars is neglected during the brief Δ t . This neglect would introduce some error in the analysis. Related to this is the assumption we are making that the transfer of momentum occurs at one location – that the cars do not slide appreciably during Δ t – which is certainly an approximation (though probably a good one). Another source of error is the application
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

Ask a homework question - tutors are online