Question

a 3.0 kg mass moving to the right at 1.4 m/s collides in a perfectly inelastic collision with a 2.0 kg mass initially at rest. what will the vleocity of the combined mass be after collision? show your work.

Answer 1

Will fan and medal!

Answer 2

@airjordan200

Answer 3

From Wikipedia -- Inelastic collision

\[m_a u_a + m_b u_b = \left( m_a + m_b \right) v \, \] Ua is initial velocity of Mass A and Ub is the initial velocity of Mass B

where v is the final velocity, which is hence given by
\[ v=\frac{m_a u_a + m_b u_b}{m_a + m_b}\]

Plug in the values and solve for v...