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The parking brake on a 2000 kg Cadillac has failed, and it
Chapter 9, Problem 18E(choose chapter or problem)
Problem 18E
The parking brake on a 2000 kg Cadillac has failed, and it is rolling slowly, at 1 mph, toward a group of small children. Seeing the situation, you realize you have just enough time to drive your 1000 kg Volkswagen head-on into the Cadillac and save the children. With what speed should you impact the Cadillac to bring it to a halt?
Questions & Answers
QUESTION:
Problem 18E
The parking brake on a 2000 kg Cadillac has failed, and it is rolling slowly, at 1 mph, toward a group of small children. Seeing the situation, you realize you have just enough time to drive your 1000 kg Volkswagen head-on into the Cadillac and save the children. With what speed should you impact the Cadillac to bring it to a halt?
ANSWER:
Step 1 of 3
The objective here is to calculate the speed with which a car of known mass to be hit with another car of known mass so that it can be brought to rest.