0
Do we wear seat belts in cars and airplanes to protect ourselves from speed or from acceleration?
Wiki User
∙ 13y ago
Seat belts protect you from the impact of a collision, not from speed or acceleration.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
When riding in a car you sense changes in speed and direction through the forces the car applies you. Do you wear seat belts to protect yourselves from speed or from acceleration?
You wear a seat belt to protect against acceleration. Acceleration is a change in speed over time. When you crash your speed changes over a very small amount of time. From an empirical stand point defining positive acceleration as an increase in speed over time a decrease in speed would be negative acceleration. This large negative acceleration that occurs when you crash causes large forces to be placed on the vehicle you are traveling in due to its mass. If you were to increase the time over which you crash you would have a smaller negative acceleration and thus less force would be enacted upon the vehicle. This is why cars have crumple zones. Newtons First law of motion an object in motion tends to stay in motion until acted upon by an unbalanced force. When you are in a car traveling at 50mph your body is also traveling at 50mph. When you crash your body would continue to travel at 50moh if it were not restrained by your seat belt. and it would be the sudden negative acceleration of your body into the things around you that would cause injury to your person. Seat padding protects you from acceleration or at least makes it more comfortable. A car can't accelerate fast enough to cause you harm. Seat belts are for catastrophic decelerations, such as a crash.
What are belts of wind called?
belts of wind are trade winds
How do seat belts reduce injuries?
Seat belts are meant to hold you in place so that you're not thrown out a window or the windshield should you have an accident.
What is the uniform acceleration that causes a train velocity to change from 25M's to 75M's in an 5.0period?
As we organize the given data and prepare to calculate, we notice that the gainin speed corresponds to a change from roughly 56 to 168 miles per hour !Acceleration = (change in speed) divided by (time for the change).Acceleration = (75 - 25) / 5.0 = 50/5 = 10 meters per (.....)2The question doesn't give the unit of time represented by the 5.0.If it's 5 seconds, then the acceleration is 10 m/s2 . . . about 2% more than 1G,and a train could never do that.It seems more likely that it's 5 minutes. Then, the acceleration is (1/6) m/s2,or about 0.017G, which is somewhat more reasonable for a mile-long freight.But there's still that problem of winding up at 168 mph.Maybe this is one of those super bullet trains in Germany or Japan that canactually go from 56 to 168 in 5 seconds. This suggests to us that the passengersare probably required to wear seat belts, or at least that they should be.
Is Lether magnetic?
If you mean leather, as in shoes and belts, then the answer is no.
When riding in a car we can sense changes in speed or direction through the forces the car applies on us. Do we wear seat belts in cars and airplanes to protect us from speed or from acceleration?
Acceleration
Do you have to wear seat belts on an airplane?
Are you serious? Of course you do! Safety is required on airplanes.
Do airplanes have seat belts?
Almost all of them. In the U.S., the FAA (Federal Aviation Administration) requires them.
Why were safety belts are designed?
To protect you if an accident ever happens.
What are belt or belts used for?
Different types of belts have many different uses depending on the need. Drive belts are used for an engines's fly wheel. Weightlifting belts are used to support a person when lifting weights. Seat belts are used to protect drivers and passengers in automobiles.
What do seat belts do besides protect you from injury?
They prevent you from being ejected from the vehicle.
What are seat belts used in?
Cars, airplanes, trains, some buses, shuttles (occasionaly) jets, highchairs, rollercoasters, and anything else you can think of :)
Does a 1997 mercury villager have 3 belts or a serpentine belt?
there are three belts one for the alt and one for the air one for the water pump and power stearing but its called the acceleration tension pully from all i have been looking
What causes a squeal in the engine on a 1999 Chevy Corvette to increase with acceleration?
I have a 99 and had a nasty squeal that would be intermittant upon acceleration, I changed the belts (upper and lower) and used Gatorbacks (belts by Goodyear), and the squeal is gone.. Don't know if this is the problem or not, but it will only cost you about 50 bucks and hour worth of your time to find out. Good luck!
Are meter readers exempt from wearing seat belts?
Nobody is exempt from wearing a seat belt. Seat belts and the laws around them were designed to protect people in the event of a collision.
When riding in a car you sense changes in speed and direction through the forces the car applies you. Do you wear seat belts to protect yourselves from speed or from acceleration?
You wear a seat belt to protect against acceleration. Acceleration is a change in speed over time. When you crash your speed changes over a very small amount of time. From an empirical stand point defining positive acceleration as an increase in speed over time a decrease in speed would be negative acceleration. This large negative acceleration that occurs when you crash causes large forces to be placed on the vehicle you are traveling in due to its mass. If you were to increase the time over which you crash you would have a smaller negative acceleration and thus less force would be enacted upon the vehicle. This is why cars have crumple zones. Newtons First law of motion an object in motion tends to stay in motion until acted upon by an unbalanced force. When you are in a car traveling at 50mph your body is also traveling at 50mph. When you crash your body would continue to travel at 50moh if it were not restrained by your seat belt. and it would be the sudden negative acceleration of your body into the things around you that would cause injury to your person. Seat padding protects you from acceleration or at least makes it more comfortable. A car can't accelerate fast enough to cause you harm. Seat belts are for catastrophic decelerations, such as a crash.
Wearing safety belt make you save but do not protect you from drunk drivers true or false?
It is true that safety belts will keep you safe but will not protect you from drunk drivers.
