A steel ball of radius `2 cm` is at rest on a frictionless surface. Another ball of

Аватар автора
Романтический праздник
A steel ball of radius `2 cm` is at rest on a frictionless surface. Another ball of radius `4 cm` moving at a velocity of `81 cm//see` collides elast cally with first ball. After collision the smaller ball moves with speed of

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