Kevin S. Huang

2008: Problem 9

Topic: Collisions
Concepts: Conservation of linear momentum

Solution:

By conservation of linear momentum, we have

m_1\vec{v}_0=m_1\vec{v}_1+m_2\vec{v}_2

The x-component of this equation is given by

m_1v_0=m_1v_{1x}+m_2v_{2x}

as shown in statement V. The y-component of this equation is given by

0=m_1v_{1y}+m_2v_{2y}

as shown in statement III. Thus, the answer is B.