If you double the speed of a car, the amount of kinetic energy in a crash:
|
Doubles.
|
|
|
Quadruples.
|
|
|
Stays the same.
|
|
|
Triples.
|
Explanation
When drivers double the speed of their car, they increase its impact force, or kinetic energy, by four times. If they triple their speed, the kinetic energy increases nine times. By law, drivers aren't allowed to speed; they must obey the posted speed limit and adjust their speed according to weather, road, and traffic conditions. Driving at a safe speed reduces the likelihood and severity of crashes.
Answer Statistics
🟡 This question is moderately difficult — 26.6% of our users answer it incorrectly.
Other questions in the same category: Collision Prevention and Response
In Pennsylvania the top major crash type for 16 year old drivers is:If you are involved in a crash, you must:Regardless of fault, a crash report must be filed by the driver of a vehicle if the crash involves death or bodily injury.If you are involved in a crash, you must:Collisions can happen more often when one vehicle is traveling slower than the flow of traffic.You must notify law enforcement and file a Report of Traffic Accident Occurring in California (SR 1) with DMV when:You are involved in a minor collision at an intersection. There are no injuries and very little vehicle damage. You should:You must file a Report of Traffic Accident Occurring in California (SR 1) with DMV within 10 days if you:When you are involved in an accident, you should:Drivers who leave the scene of a crash involving injury commit a felony of the ____ degree.
This question appears in the following DMV practice tests: