ooo T-Mobile 11:16 AM session masteringphysics.com C Item 13 Ablock of mass m1 m

Question

ooo T-Mobile 11:16 AM session masteringphysics.com C Item 13 Ablock of mass m1 moving with speed vi undergoes a completely inelastic collision with a stationary block of mass m2. The blocks then move, stuck together, at speed v2.After a short time, the two-block system collides inelastically with a third block, of mass m3. which is initially stationary. The three blocks then move, stuck together, with speed vs.A three blocks have nonzero mass. Assume that the blocks slide without friction. Part A Find the ratio of the speed v2 of the two-block system after the first collision to the speed vl of the block of mass m1 before the collision. Express your answer in terms of m1. m2, and/or m3. My Answers Give Up Review. Part Correct intuition and experience with the momentum equations lead to the following conclusions: 1. The blocks will slow down after collision (v2 v or

Explanation / Answer

initially m2 block is stationary

by momentum conservation

m1v1 = (m1+m2)v2

v2 = m1v1/(m1+m2)

K2 = 1/2*mv2^2

m = (m1+m2)

v2 = m1v1/(m1+m2)

K2 = m1^2*v1^2*(m1+m2)/2*(m1+m2)^2

K2 = m1^1*v1^2/2*(m1+m2)

K1 = 1/2m1v1^2

K2/K1 = m1/(m1+m2)

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