n identical blocks lie in a line on a smooth surface, separation L between adjacent near faces. The first is given speed v toward the next; all collisions are perfectly inelastic. Which statements are correct?
Select all that apply

Question

n identical blocks lie in a line on a smooth surface, separation L between adjacent near faces. The first is given speed v toward the next; all collisions are perfectly inelastic. Which statements are correct?

Select all that apply

G1 Physics · Accepted Answer

Use conservation of linear momentum together with e = (relative speed of separation)/(relative speed of approach). Solving the two collision equations gives A: Last block starts moving at t = n(n-1)L/(2v).; C: Centre of mass has final speed v/n..