1. Energy absorption in a crash is directly dependent on
A. vehicle speed.
B. angles of collision.
C. areas of vehicle contacts.
D. all of the above
2. In a motor vehicle crash, as a car crushes, it absorbs some of the force of the collision.
A. TRUE
B. FALSE
3. If your speed triples, you need
A. nine
B. seven
C. five
D. three
times the distance to stop.
Answer (2)
Energy absorption in a crash depends on vehicle speed, angles of collision, and areas of vehicle contacts.
A car crushing absorbs force during a collision.
If speed triples, stopping distance increases ninefold.
The answers are D, True, and A, respectively. D , T r u e , A
Explanation
Problem Analysis Let's analyze each question step by step to provide the correct answers.
Answering Question 1 Question 1: Energy absorption in a crash is directly dependent on multiple factors. Vehicle speed is a primary factor because kinetic energy increases with speed. The angles of collision affect how the forces are distributed. The areas of vehicle contacts determine where and how much energy is absorbed. Therefore, the correct answer is D.
Answering Question 2 Question 2: When a car crushes in a motor vehicle crash, it absorbs some of the collision's force. This is a fundamental principle of vehicle safety design. So the answer is A.
Answering Question 3 Question 3: Stopping distance is related to the square of the speed. If your speed triples (multiplies by 3), the stopping distance increases by a factor of 3 2 = 9 . Therefore, you need nine times the distance to stop. The correct answer is A.
Examples
Understanding energy absorption and stopping distances is crucial in vehicle safety. For example, knowing that stopping distance increases with the square of speed helps drivers maintain safe following distances. Similarly, understanding how vehicle design contributes to energy absorption can influence decisions about vehicle choice and safety modifications. These concepts are also applied in designing safer roads and implementing effective traffic laws to minimize the impact of collisions.
The answers to the questions are: 1) D (all of the above), 2) A (TRUE), and 3) A (nine times the distance).
;
