A bumper car with a mass of 150 kg is moving forward at 10 m/s. It collides with a stationary bumper car with a mass of 200 kg. After the collision, the 200 kg bumper car moves forward at 8.0 m/s. Does the 150 kg bumper car continue to move forward or start to move backward after the collision?

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.