How does friction impact speed?
After reading your story I am confused did the crusher sell or buy the car. You make it sound like he sold it for 300 bucks? Report the car stolen, it is grand theft auto, if the police do not go and get it, make a citizens arrest and bring the guy to the station, call all the local tv and radio and newspapers and rant about how the cops are crooks in cahoots with the crusher. Hell I would storm the mayors office and demand help. If the crusher guy crushed my car, I would toss him in the machine and crush him
A lot of homes have lightning rods. Usually the heavy (uninsulated) wire runs down to a spike in the ground. Here is the problem. The idea of the spike is to dissipate the charge into the ground. The spike by itself is usually inadequate. Ideally the wire should connect to a grid of connecting uninsulated wires buried in the ground, perhaps 50 or 60 square feet. Lightning strikes on a home are intense and unpredictable. Fireplace bricks go flying and electronic stuff gets fried. The spike is better than nothing.
Here where I live I believe that they are still required by code. When we built our home last year they had to use them. They have to be pounded into the ground and not laid into a hole to be properly used as a grounding device.
