A 1600 kg car traveling at 13.7 m/s to the

Question

south collides with a 4600 kg truck that is
initially at rest at a stoplight. The car and
truck stick together and move together after
the collision.
What is the final velocity of the two-vehicle
mass? Assume that North is positive.
Answer in units of m/s

Answer 1

M1*V1 = (M1+M2)*V

M1 = 1600 kg
V1 = 13.7 m/s.
M2 = 4600 kg
Solve for V.