Let's see...

The driver in the car is going 50 miles per hour, hits the "other car",
then suddenly stops going 50 miles per hour.

The driver in the car is going 50 miles per hour, hits the "solid object",
then suddenly stops going 50 miles per hour.

In both cases, the driver is slammed into the seatbelt/airbag/dashboard at
50 miles per hour. Answer b!




"Harry K" wrote in message
I'm bored so will put forward this one to see what happens:

2 cars of equal mass crash head on at 50 mph. Both drivers will feel
an impact equal to crashing into a solid object at:
a. 100 mph
b. 50 mph
c. Other

Harry K