Forces and injuries in a collision between moving and stationary vehicles

[healey1957]

Homework Statement

Two identical vehicles 1 vehicle stationary and with brakes applied other vehicle traveling at 15mph. Road surface of good tarmacadam but damp after rain. Would occupants of both vehicle experience the same forces and would the injuries sustained be equal?

Homework Equations

Newtons laws of motion

The Attempt at a Solution

So long ago since I worked this at out college (50 years!) I can't remember formulae and method. Any help would be appreciated.

 

[Alain De Vos]

Choose a frame of reference connected with the center of mass of the 2 objects to discribe distance and velocity. Does this help?