You are sitting in your car, stopped at a traffic light. Suddenly, a vehicle rear ends your car. The impact isn’t hard although it is unexpected. You take a look at your car and see that there is minor damage, or no damage at all, to either vehicle. The bumpers absorbed the bulk of the energy from the crash so they essentially protected the car. You feel a little pain in your neck and upper back, perhaps a little dizzy or you have a headache, but you shrug it off, reasoning that it is from the unexpected jolt. After all, they didn’t hit you that hard. You exchange information with the other driver and go on your way.
The next morning is a different story. Your neck is painful and stiff. You have pain in your shoulders and back as well. A visit to the doctor reveals a diagnosis of whiplash.