This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Momentum conservation gives: (1) m 1 v 1i + m 2 v 2i = m 1 v 1f + m 2 v 2f Energy conservation leads to: (2) v 1i + v 1f = v 2i + v 2f (sum of initial and final velocities is conserved) In our case, equ. (1) gives: (6)(25) + (12)(20) = 6 v 1f + 12 v 2f or 6 v 1f + 12 v 2f = 90 Equ. (2) gives: 25 + v 1f = 20 + v 2f or v 1f v 2f = 45 Multiplying the second equation by 12 and adding gives: 18 v 1f = 630 or v 1f = 35 cm/s From this, we find v 2f = 10 cm/s...
View Full
Document
 Spring '06
 Buchler
 Physics, Work

Click to edit the document details