Two masses at rest on a frictionless surface have a


In Example 3.4, there are external forces acting on the masses.

(a) Identify these forces.

(b) Why is the linear momentum still conserved

EXAMPLE 3.4

Applying the Conservation of Linear Momentum

Two masses at rest on a frictionless surface have a compressed spring between them but are held together by a light string ( Fig. 3.18). The string is burned, and the masses fly apart. If m1 has a velocity v1 1.8 m/s (to the right), what is the velocity of m2?

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Chemistry: Two masses at rest on a frictionless surface have a
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