A 1250 kg truck is moving down the highway with a velocity of 2.0 m/s crashes head-on with another car with a mass of 875 kg and a velocity of 6.0 m/s. After the collision, the two vehicles bounce off each other and the truck has a new velocity of 1.0m/s. What is the new velocity of the car?

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.