Hello everyone, I just joined the forum because my friends and I have been having an argument for a couple hours now over magnetism and its uses. So I will just jump right into our argument... I say that an electromagnet attached to the front bumper of a vehicle can be attached to the back of another speeding vehicle and used to bring it to a standstill by applying its brakes to drag the other car to a stop. They say that it is impossible for a electromagnet to be strong enough to hold another vehicle hard enough to perform said maneuver over ANY length of time. I have tried to prove this through simple math, but they will not accept that and want someone else to prove me wrong (or right). The values for everything are... (V1 is the vehicle with the magnet and V2 is the other) 1. V1 has a magnet core of UP TO 1 meter in width, and 2.5 meter tall. This can have any kind of wire wrapped around it you see fit, and as many wraps as is realistic for an object that size. 2. V1 can supply a maximum of 350 amps to the magnet coils. 3. V1 and V2 weigh the same at ~4,000lb. 4. V1 and V2 are traveling at 70mph. 5. V2 has an engine that is capable of putting out 300ft/lb of torque. 6. V1 and V2 both have the same amount of traction. 7. V1 has brakes strong enough to stop its tires from rotating (Skid). 8. We will assume the closest that the magnet can get to any materials it can pull on is 0.1524 meters (1/2 a foot) which degrades its capabilities. That's it... so if anyone wants to try and prove this situation either way (mathematically) please do. Thanks to everyone for reading this.