Username:
   
Password:

I forgot my username or password.

In support of all the students who are displaced from school due to the Corona virus. Access to physics zone and chemistry zone lessons are now available free of charge. This will be maintained at least through August 1st 2020. Learn and be well.

Physics Lessons Review Links Solutions Physics Shop

Children become bullets in an accident

This clip illustrates what happens to children in a car accident if they or their car seat are not properly belted in.  (This particular car seat was flawed.) Remember, if the car was going 55mph, then any person or object in the car is also going that fast and will continue to go that fast until a net force acts on them to slow them down. 

It should be pointed out that the rotating dial makes 1 rotation in 1/10th of a second.   It was used to measure small intervals of time on the film (pre-digital clock)

Crash footage from the National Transportation Safety Board