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55 mph.. the unbelted occupants would be traveling at 55 mph at the moment of impact. And, just after the vehicle come to a complete stop, the occupants will slam into the steering wheel, windshield, dashboard, c or other interior surfaces.

In an impact like that, the body travels with the speed of the vehicle. That means that your body will impact the dash or the windshield immediately after the vehicle impacts the wall. In any case it is about 0.1 sec from the time of impact, depending on the speed of the vehicle impacting the wall.

Yes, all things being equal, crash severity does increase proportional to the speed of each vehicle at impact, and is a vector sum. So, there is a big difference between crash severity at impact from being "rear-ended" (when one vehicle is traveling the same direction as another, and impacts the front of their vehicle with the rear of another) and a "head-on" impact (two cars traveling into one another, impacting both front bumpers). In the rear-end impact, you take the momentum (mass times velocity) of the rear, impacting vehicle "A" and subtract the momentum of the front-most impacted vehicle "B", and that gives you the resultant impact force (the difference in momentum being transferred). weak impact scenario example: vehicle A is traveling 60 mph, and vehicle B is the same mass and is traveling 50 mph. The difference in momentum would be the mass times 10 mph...not much. severe impact scenario: vehicle A is traveling 70 mph, and vehicle B is at rest (0 mph)...large impact. In the head-on impact, you have the most severe crash scenario. In this case, you ADD the momentum of vehicle A with the momentum of vehicle B, and you get the resultant force of impact. Even if both vehicles are traveling 30 mph, with the same mass, and have a heaad-on collision, the is close to the same as one vehicle traveling 10 mph and hitting the other vehicle going 70 mph...severe impact.

Yes, all things being equal, crash severity does increase proportional to the speed of each vehicle at impact, and is a vector sum. So, there is a big difference between crash severity at impact from being "rear-ended" (when one vehicle is traveling the same direction as another, and impacts the front of their vehicle with the rear of another) and a "head-on" impact (two cars traveling into one another, impacting both front bumpers). In the rear-end impact, you take the momentum (mass times velocity) of the rear, impacting vehicle "A" and subtract the momentum of the front-most impacted vehicle "B", and that gives you the resultant impact force (the difference in momentum being transferred). weak impact scenario example: vehicle A is traveling 60 mph, and vehicle B is the same mass and is traveling 50 mph. The difference in momentum would be the mass times 10 mph...not much. severe impact scenario: vehicle A is traveling 70 mph, and vehicle B is at rest (0 mph)...large impact. In the head-on impact, you have the most severe crash scenario. In this case, you ADD the momentum of vehicle A with the momentum of vehicle B, and you get the resultant force of impact. Even if both vehicles are traveling 30 mph, with the same mass, and have a heaad-on collision, the is close to the same as one vehicle traveling 10 mph and hitting the other vehicle going 70 mph...severe impact.

if a truck weighing 5000 lbs traveling 15 mph hits an object , what is the pressure at impact?

Three factors that can affect a vehicle's force of impact in a collision are the speed at which the vehicle is traveling, the weight of the vehicle, and whether or not safety features such as seat belts and airbags are deployed and functioning properly.

The force of impact depends on various factors such as the weight of the vehicles, momentum, and the duration of the collision. However, in general, a car traveling at 55 miles per hour hitting a stopped vehicle can result in a significant force of impact due to the high speed involved. It is important to consider that the force of impact can cause serious damage and injuries.

D. H Hand has written: 'Occupant response and vehicle acceleration in a 30 MPH frontal impact test-1982 Winnebago Trekker-truck-NHTSA 821301' -- subject(s): Crash injuries, Crashworthiness, Trucks 'Occupant response and vehicle acceleration in a 30 mph frontal impact test' -- subject(s): Automobiles, Windows and windshields, Crash injuries, Collision damage, Automobile drivers, Crashworthiness, Speed, Seat belts

No, the force of impact is not directly proportional to velocity. The force of impact is determined by factors such as the mass of the vehicle and the effectiveness of its brakes in stopping it.

The force of impact when a vehicle traveling at 40 mph hits a stationary object depends on the mass of the vehicle and the duration of the impact. However, in general, the force can be significant due to the kinetic energy of the moving vehicle being transferred to the object upon impact. It is important to note that this force can result in damage and injury.

Is The amount of energy absorbed by a vehicle in an impact is related to the direction of the impact and design of the vehicle

it reduces the impact force