The delorean featured in the movie is an actual car, made by john delorean. he had originally envisioned the car would produce 200 horsepower, but eventually settled on 170 horsepower output for the engine. in the united states, the vehicles were required to have catalytic converters, causing a 40 horsepower reduction in output power. if the delorean requires 850 kilojoules to reach a speed of 60 miles per hour, how much longer does a us model take to reach 60 mph than its european counterpart?

An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?