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nightshade123
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Homework Statement
bloks b and c have m asses 2m and m respecti vely, and are at rest on a firctionless surface
black a also of mass m.. is heading at speed v toward block b as show... determine te final velocity of each block after alll subsequent collisions are over, assum all collision are elastic
Homework Equations
v_1f = (m_1-m_2/(m_1+m_2)) * v_1i + (2m_2/(m_1+m_2)) * v_2iand
v_2f = (2m_1/(m_1+m_2)) * v_1i + (m_2-m_1/(m_1+m_2)) * v_2i
The Attempt at a Solution
i compared block A when it hits block B and then compared block C when block B hits it..
i got...
(m-2m / 2m+ m) * v
block a) - 1/3 v
found block b's v_i before it hits block c to be 2/3 v
(2m - m / 3m) *2/3v
block b) 2/9 v
(2*2m / 3m) *2/3v
block c) 8/9v
i feel confident these answers are right but just trying to see what others think
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