Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: momentum


In a collision with a tree (or the proverbial brick wall) the car comes
to rest at the tree/wall.
*************************
This statement is false in almost all circumstances. When a car
hits a wall, it bounces. The amount of bounce is characterized by the
inelasticity of the collision.

True, Jack, but we also seem to be forgetting that the Earth (which the
tree is attached to) moves too -- not much resultant velocity, but a really
big mass.

Jim Green
mailto:JMGreen@sisna.com
http://users.sisna.com/jmgreen