Question

Two identical bumper cars A and B with a mass of 12 kg approach each other with velocities VA1 = 4.5 m/s and VB1 = 5.5 m/s. After the said collision, they moved together in a certain distance. What is the velocity as they moved together?

Answer 1

$P_i = m(5.5-4.5) = m$

$P_f=2mv$

Momentum conservation of the system:

$P_i=P_f\\ \Rightarrow v=\cfrac{1}{2}$ Meter/sec