objects a and b are moving toward one another on a frictionless surface. Object B has...
objects a and b are moving toward one another on a frictionless surface. Object B has twice the mass and twice the speed as object A. the two objects collide and stick together. what is true about the magnitude of the final momentum of the two-object system?
Homework Answers
Let mass of A is m and speed of A is u
Hence mass of B is 2m and speed is -2u
Now from conservation of momentum
Ma.Ua + Mb.Ub = (Ma+Mb)V
=) V = (m.u - 2m.2u)/(m+2m) = -3mu/3m = -u
That means speed after collision is u along direction of B
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