Question

A metal sphere with a mass of 80.0g rolls along frictionless surface at 20.0m/s and strikes a stationary sphere having a mass of 200.0g. The First sphere stops completely. At what speed does the second sphere move away from the point of impact

Answer 1

use preservation of momentum. total momentum stays the same before and after the impact. so:\[m_1v_1=m_2v_2\]in this case as the first sphere stops completely after the impact.

Answer 2

thanks

Answer 3

yw