A bumper car with a mass of 200 kilograms traveling at a velocity of 3.5 meters/second collides with a stationary bumper car with a mass of 250 kilograms. If the two bumper cars stick and move together at a velocity of 2.3 meters/second, what is the kinetic energy of the system after the collision?

Question

anonymous · Answer

$$k = \frac{ 1 }{ 2 }m v^2$$
Where m is the total mass of your system (250+200 kg) and v is the velocity of your "new" fat particle (2.3 m/s).