What type of meter would be connected on both sides of the resistor in a circuit

Ben(55 kg) is standing on very slippery ice when junior(25kg) bumps into him. junior was moving at a speed of 8m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision .

Which two particles are found in the center of an atom

Explain why electric current cannot exist if a current doesn't have a voltage source.