Crash Definition and 199 Threads

Homework Statement The Known Facts of the Accident [1] Ned was traveling North on Oak Avenue in his car of mass 2000kg [2] Ed was traveling East on King Street in his truck of mass 3000 kg [3] The two approached the intersection at the same moment. [4] With his stoplight “green”, Ned had...

Homework Statement A: Albert survived the plane crash B: Bill survived the plane crash C: Cory survived the plane crash Create the sentence (sentential logic) "at most one of them will survive the plane crash".Homework Equations The Attempt at a Solution \sim[(A\&B)\vee((B\&C)\vee(C\&A))]...

Homework Statement Mr. Smith was traveling northbound on Ashland Blvd when his car broadsided Mr. Green’s car, as it traveled east on Lime Rd. When the cars collided, they stuck together and slid. Analysis of the skid marks before the cars collided, indicated that Mr. Green did not apply his...

[b]1. Can you be of any help, I need a simple (if that is possible) equation to help me determine the weight increase of a 12 stone occupant of a car doing 30mph coming to a dead stop? [b]2. Don't have a clue [b]3. This is a very general question to put into a slide show...

I'm a college student needing to take calculus 2 this fall. However, I have not taken calc 1, so since I'm good at teaching myself I'm planning on giving myself a crash course in the material covered in calc 1 over this summer. Can anyone recommend a good calculus book for someone who's fairly...

I was reading about how Newton noticed the apple from the apple tree fall down to Earth due to the influence of the Earth's gravitational force. So why don't the moon fall down to earth? Why don't any of the man-made satellites just fall down to earth? Why are they able to stay in orbit...

I am not sure if that's the best subforum to post, if Mentors decide it should be somwehere else that's OK with me. It just hit news here and looks interesting. http://www.bpp.com.pl/IMG/katastrofa.jpg This is not a part of an official investigation. Pictures were taken at the airport...

Very sad news. :frown: Our hearts go out to your countrymen, Borek. http://news.yahoo.com/s/ap/20100410/ap_on_re_eu/eu_russia_plane_crash" .

Let's do an exercise in safetly management and sound judgement. In some countries somebody is considered guilty if there is an accident with casualties. Maybe we could do a little court marshalling to find out who is guilty in the following mishap, It pertains a take off crash of some Air...

Very sad. There is talk that there is a problem with the track.

Homework Statement Imagine a planet in the shape of a regular tetrahedron (its surface consists of 4 equilateral triangles). Suppose that on each face there is a car traveling at a constant speed in clockwise direction along the edges bounding the face. Can they travel without crashing...

Some pretty dramatic footage. Unfortunately, the pilot did die in this crash; I think it was reported that two or three others were onboard and survived. The pilot is being called a hero for avoiding the homes just short of the field. https://www.youtube.com/watch?v=k55yMo8q6Us

Please help me answer some of the physics questions related to a 3 car accident... I was the middle car in a three-car crash during heavy morning rush hours (stop n go) traffic. The truck in front of me and I came to an almost complete stop when all of a sudden I was hit from behind by a...

I want to mount some type of measuring device on a remote control car, and then crash it into a wall. As a result of the impact, I want to look at the speed the car was traveling at point of impact, as well as the rate of decelleration that occurred after impact (using various bumpers). I think...

Homework Statement What impact does physics facts like momentum, friction, collision, forces, inertia and second collision have on race driver crashes. Particular race: The Lexmark Indy. Particular year: None Homework Equations The Attempt at a Solution I can't seem to find a...

What is a short book which covers all of the key results in calculus in a rigorous manner?

Hello everyone, my name is Jordan and I love Physics... Well my main question is, when two cars get into an accident, let's say one vehicle is traveling at a velocity of 40 miles per hour, the other vehicle at the same 40 miles per hour. When they get into a head on collision, you add the two...

You have probally all heard about the Air France jet crashing in the Alantic. Reports so far have suggested that lighting was the cause of failure. Now I believe Commericial Air Crafts are struck by lightning at least once a year. Lightning is suppose to pass around the exterior of the...

1. Homework Statement Three carts move on a frictionless horizontal track with different masses and speeds. Cart 1: 4 kg (5 m/s to the right) Cart 2: 10 kg (3 m/s to the right) Cart 3: 3 kg (4 m/s to the left) Cart 1 and 2 are right behind each other on the left side of the track...

Homework Statement On May 19, an accident occurred at the corner of two asphalt streets with no stop signs. The speed limit was 40 km/h on both streets. As lead CSI on the case, you must determine whether one or both cars should be ticketed for speeding, which car had right of way at the...

If two cars are going towards each other, collide, and then are separated (have separate masses and separate velocities)... that is an elastic collision, correct?

I can't believe that she was only sentenced to 6 years, she can probably get released in 2 with good behaviour. Just incredible that people can be this stupid. Paying bills while driving? http://news.yahoo.com/s/ap/20090404/ap_on_re_us/text_crash

Do they just destroy each other?

Greetings! Once again I don't know where to classify this tread... sorry. My Question is the following: Let's say we have a ball of mass, m. Let the mass be a steal ball for example. We throw the ball at the floor. The impact that follows surely is a non-conservative impact. (I hope I said...

Hi everyone, I'm trying to understand crash physics. When a moving object collides with a static object, is there always deceleration present at impact? If the moving object is designed to pass through something else (a bullet or missile) I assume there is very little deceleration if any...

Hi everyone, As part of the IB program, we are all required to design an experiment and write about how we would go about testing it . My instructor's decided that the best way to test this would be to "Determine using physics whether a Smart Car is safe in a crash" Since this is a...

I have an HP a6528p desktop that came installed with Vista. I dual boot Vista and Ubuntu 8.1 with no problems. I bought a magazine that came with a copy of opensuse 11.1 and I tried to use the disk as a LiveCD. But when I inserted the disk it asked if I wanted to install opensuse, I said no...

First off, apologies if this is in the wrong section. It might be more of an engineering problem but I couldn't really work out exactly which section it should go in. My young sister is doing an engineering course and has become stuck on a particular question, I offered to help not expecting it...

Hello, it's a my little doubt... i would like to receive a physical description of the crash between the titanic and the iceberg. Should we consider the third Newton's law?what are the forces which take part in the crash? Help me please...

Why doesn’t the Electron crash into the proton?? We know in an H atom the e- is attracted to the + charge of the proton. And it wants to get down to the "0 level" orbit. But what makes that level zero – or why does e- stop going down? Is there another force that counteracts the force of charge...

http://ca.reuters.com/article/newsOne/idUSTRE4B76RK20081208 One quote that I heard: "Thank God it didn't hit the high school".

Is there anything like *crash course* for electrodynamics ?

Homework Statement A 1015 kg automobile hits a tree at 32 m/s, coming to a complete stop in 0.03 s. What force was applied to the car by the tree? (Take the forward direction of the car as positive).Homework Equations i don't know what would be relevant. f=m/a f (cos theta) dThe Attempt at a...

Homework Statement A person drives his SUV into a concrete wall. The car was initially moving East at 12.5m/s and the hood crumples a distance of 1.2m during the crash. What is the acceleration of the car during the crash? (don't forget directions when dealing with acceleration) I don't...

I just need some quick input. When dealing with impulse and say a car crash, would you want to have a larger impulse and thus a larger change in momentum or a smaller impulse and smaller change in momentum? It seems to me that with a car going say 50 km/hr with a mass of 1000kg then your...

Homework Statement In a military test, a 575 unmanned spy plane is traveling north at an altitude of 2700 and a speed of 450 . It is intercepted by a 1280 rocket traveling east at 725 . If the rocket and the spy plane become enmeshed in a tangled mess, where, relative to the point of...

[SIZE="5"]SOLVED Homework Statement Seat belts and air bags save lives by reducing the forces exerted on the driver and passengers in an automobile collision. Cars are designed with a "crumple zone" in the front of the car. In the event of an impact, the passenger compartment decelerates...

http://www.newsday.com/news/nationworld/nation/la-me-traincrash13-2008sep13,0,245095.story" Man, this is really terrible. The last time I remember something like this happening was when some guy left his car on a Metrolink track. A sorry example of physics at work :(.

Homework Statement 35. Speedy Sue, driving at 30.0 m/s, enters a one-lane tunnel. She then observes a slow‐moving van 155 m ahead traveling at 5.00 m/s. Sue applies her brakes but can accelerate only at ‐2.00m/s2 because the road is wet. Will there be a collision? State how you decide...

Heard on the radio that the aircraft that crash landed at London airport crashed because of ice in the fuel (or that is the best guess) surly this is a cop out.

Homework Statement There are two cars and the situation is located at a crossroad. car 1 is traveling south and car 2 is traveling east. For some strange reason car 2 has slammed the brakes and stopped right in the middle of the intersection, causing car 1 to 't-bone' crash into car 2. the...

states of matter problem, me = :confused: Total cross-sectional area of a load-bearing calcified portion of 2 forearm bones is approx 2.4cm squared. During a car crash, the forearm is slammed against the dashboard. the arm comes to frest from intiial speed of 80 km/h in 5.0 ms. If arm has...

Question: A 480kg car moving at 14.4m/s hits from behind another car moving at 13.3m/s in the same direction. If the second car has a mass of 570kg and a new speed of 17.9m/s what is the velocity of the first car after collision? Since there is a velocity for one car after the collision and...

Crash test dummies don't always wear seat belts. If a 78 Kg dummy, in a car traveling at 53 Km/h, hits a concrete barrier, what is the force applied to the dummy?

I am trying to determine the speed of one vehicle involved in an accident. I know the speed of the other vehicle, and how far the two traveled after impact. There was no braking prior to impact. Vehicle A swerved 90 degrees to the right after impact, while vehicle B rotated 180 degrees to the...

Just for the technical side i like to watch air crash investigation, it has all ways been an interest to me as to how things can fail, but i seem to be getting all sissy and weeping watching the programs, surly this not natural for a male.

A set of crash tests consists of running a test car moving at a speed of 11.4 meters/sec (26 mph) into a solid wall. Strapped securely in an advanced seat belt system, a 59kg (130 lbs) dummy is found to move a distance of 0.66 meters from the moment the car touches the wall to the time the car...

My driving instructor told me that if you know you are going to crash into another car, then brake right before contact. Wouldn't it make more sense start to brake as early as possible because it would decrease velocity which would decrese the force of impact?

hello everyone, I'm doing a presententation on the physics of crash testing next week. It should be around 10-12 mins, and I need to cover Environmental, Social, Technological and obviously Physics of the topic. Any help, tips, or information would be greatly appreciated? even book names that...

some local people in my areas got crash and burn black after a personel made a mistake to pour white bottle of acid on the carpit floor