1. What is the purpose of a “crumple zone” (which has been manufactured to collapse in a crash) in the front section of an automobile? 2. To bring a supertanker to a stop, its engines are typically...

1. What is the purpose of a “crumple zone” (which has been manufactured to collapse in a crash) in the front section of an automobile?

2. To bring a supertanker to a stop, its engines are typically cut off about 25 km from port. Why is it so difficult to stop or turn a supertanker?

3. Why might a wine glass survive a fall onto a carpeted floor but not onto a concrete floor?