A car (or automobile) is a wheeled motor vehicle used for transportation. Most definitions of cars say that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people rather than goods.Cars came into global use during the 20th century, and developed economies depend on them. The year 1886 is regarded as the birth year of the modern car when German inventor Karl Benz patented his Benz Patent-Motorwagen. Cars became widely available in the early 20th century. One of the first cars accessible to the masses was the 1908 Model T, an American car manufactured by the Ford Motor Company. Cars were rapidly adopted in the US, where they replaced animal-drawn carriages and carts, but took much longer to be accepted in Western Europe and other parts of the world.Cars have controls for driving, parking, passenger comfort, and a variety of lights. Over the decades, additional features and controls have been added to vehicles, making them progressively more complex, but also more reliable and easier to operate. These include rear-reversing cameras, air conditioning, navigation systems, and in-car entertainment. Most cars in use in the early 2020s are propelled by an internal combustion engine, fueled by the combustion of fossil fuels. Electric cars, which were invented early in the history of the car, became commercially available in the 2000s and are predicted to cost less to buy than gasoline cars before 2025. The transition from fossil fuels to electric cars features prominently in most climate change mitigation scenarios, such as Project Drawdown's 100 actionable solutions for climate change.There are costs and benefits to car use. The costs to the individual include acquiring the vehicle, interest payments (if the car is financed), repairs and maintenance, fuel, depreciation, driving time, parking fees, taxes, and insurance. The costs to society include maintaining roads, land use, road congestion, air pollution, public health, healthcare, and disposing of the vehicle at the end of its life. Traffic collisions are the largest cause of injury-related deaths worldwide.Personal benefits include on-demand transportation, mobility, independence, and convenience. Societal benefits include economic benefits, such as job and wealth creation from the automotive industry, transportation provision, societal well-being from leisure and travel opportunities, and revenue generation from taxes. People's ability to move flexibly from place to place has far-reaching implications for the nature of societies. There are around 1 billion cars in use worldwide. Car usage is increasing rapidly, especially in China, India and other newly industrialized countries.
We have a Toyota Etios Liva, four years old, petrol variant. Today, my father took it for annual servicing at the authorised service centre, where the service personnel declared that the battery was "dead".
Our car is not used much. Usually on an average, it is driven for around 14km per month...
Homework Statement
A 1130 kg car is initially at rest when it accelerates up a 21 m high hill. When it reaches the top of the hill it is traveling at 18 m/s. If it takes 6.5 s to reach the top of the hill, what was the average power of the car?
Homework Equations
W = Fd
P = w/t
The Attempt at...
Homework Statement
Your consulting agency, with its extensive knowledge of physics, has been subpoenaed to provide expert testimony at an automobile accident case in civil court. The case involves a crash between a Ford Escort car and a tractor-trailer truck.
1. The police department...
I am the captain of a high school solar car team in the Washington DC area. We were founded last year, and are currently building our second solar car to compete in the Solar Car Challenge, a national competition in Texas. One of the biggest issues we are constantly battling is our lack of...
I thought electric cars had normal gearboxes like any other vehicle but the following does not. No gear lever.
It says at 6:00 that this is because the electric motor's torque is constant no matter the rpm. Presumably it means the maximum torque available is constant for all rpm. What if this...
Hello there!
I am Yanna and I am building a racing car. I am now trying to calculate the tire drag of this car when cornering, but I'm stuck on something.
In order to find the tire drag, I need the normal load on each wheel. To find this, I made some equations:
1) the sum of the normal load...
How effective is this pocket car window breaker.
https://www.amazon.com/dp/B000IE0F12/?tag=pfamazon01-20
What if your windows were tinted with UV film. Would it still be effective?
Are there calculations or independent studies to show how effective these really are?
Thank you.
Homework Statement
A car is lifted vertically by a jack placed at the car's rear end 40cm off the central axis, so that the weight of the car is supported by the jack and the two front wheels. The distance between the front wheels is 1.60m, the distance from the axis connecting the two wheels...
Homework Statement
You throw baseballs at a mass rate of σ kg/s (assume a continuous rate) with speed u at the back of a car. They collide elastically with the car. The car starts at rest and has mass M. It moves on the ground with no friction. Find its speed and position as a function of time...
I once drove my RC car in a vertical loop in a concrete drain pipe.
If you know the diameter of the pipe, and the weight of the vehicle, what is the formula used to determine the minimum speed required for it to complete the loop?
Homework Statement
A man in a car moving with a speed ##20~ms^{-1}## shoots a bullet forward with a speed of ##150~ms^{-1}##. The bullet hits a wall and stops. Find the rise in the temperature of the bullet if its specific heat is ##500~Jkg^{-1}K^{-1}##.
Homework Equations
##K.E=1/2~mv^2## and...
Helppppppp
:eek::nb)
I'm being tormented by a large spider on the car... I'm freaking out !
So, last wednesday (7th Nov) I was sitting at a set of traffic lights and this large, Huntsman, spider starts walking across my windscreen ... WOW I thought, wonder where that came from?
As I moved off...
Homework Statement
Okay you have a rear-wheel-drive car, we can model it as a uniform rectangular block, 12 ft long, 4 ft tall, and weighs 4000 lbs. The front and rear axle centerlines are positioned within 2 ft from the far edges of the block. What kind of forward acceleration (in g's) must it...
As we know, POWER is what accelerate a car, FORCE itself doesn't accelerate a car, if FORCE cousing movement it change into work, and work over time = POWER.
The FORCE from jet engine pushes a plane forward. But as we know (or I'am wrong) FORCE don't push enything, only POWER couses...
Homework Statement
The Actual Question is that:
A car is moving on a circular hill with radius R. what is the maximum speed it can have at the apex of the hill such that it doesn't jump of from the hill. I know the solution but I want to know how will be the equations if the velocity is...
Homework Statement
Given weight car = 2500lb, acceleration = constant = 2 ft/s^2, radius of curvature at C = 1000 ft, distance between A and B = 1300 ft, distance between B and C = 900 ft
Find horizontal force of road on car at B and C.
Homework Equations
F = ma in normal-tangential...
I am in a high school physics class and have been recently assigned a mouse trap. We were given a mouse trap, that is all, and sent out on our own to create one. The requirements for this specific mousetrap car are to go forward 3 meters, then backwards 2 meters, and finally forward three meters...
Homework Statement :[/B]
A ball rolls onto the path of your car as you drive down a quiet neighborhood street. To avoid hitting the child that runs to retrieve the ball, you apply your brakes for 1.06 s. The car slows down from 14.5î + 4.50 m/s to 8.25î + 3.50 m/s.
How far did the car move...
Got a question for you mechanics enthusiasts out there. Here https://i.imgur.com/Px0Hakg.jpg from what I gather is a basic force diagram depicting a car accelerating along a straight road, Dr represents the driving force of the engine, Fr the friction acting on the tyres against the direction of...
The radio would work sometimes if it didn't pushing on the tuning buttons hard or hitting the dash underneath would make it work if it didn't work, this has been that way for 30 years, now it does not come on at all. I always thought it must be broken connection some where. I had applied voltage...
One of my classmates asked me what would be the odds of finding a car plate no with three comsequetive 9's on it.
This ISN'T A HOMEWORK QUESTION
Just a random thought.
So...if anyone is from different places of the Earth with different car plate formats ,could you'll inform ?
Homework Statement
"Based on the following data, determine if the driver who crashed was driving over the speed limit"
The relevant data given is:
-A 2002 Volvo t-bones a truck in an alley with a speed limit of 20km/h
-An eyewitness heard tires screech, then a loud bang, and also said the...
Here's the problem I was given:
Kyle is driving at a constant 45.0 m/s when he passes his street racer friend, Cameron. After a 4.00 second delay to get the car started and into gear, Cameron starts chasing Kyle with a constant acceleration of 2.00 m/s/s. How far will Cameron have to drive to...
Dear Community,
I am trying to implement the inverted pendulum cart simulation. To do so I’ve used the equation system 5 published here http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.619.551&rep=rep1&type=pdf
I've solved the equation by left hand multiplication with the inverse which...
Homework Statement
A car traveling at a constant speed of 24.0m/s passes a trooper hidden behind a billboard. One second after the speeding car passes the billboard, the trooper sets off in a chase with a constant acceleration of 3.0m/s^2.
A) How long does it take the trooper to overtake the...
Let's say we want to change a wheel in a car. We want to remove bolts fastening the wheel using this tool:
I have also drawn a diagram of the forces in operation:
Now, from experience I can say that the point of rotation of the wrench will be the blue point. Now, trying to determine the...
Homework Statement
You may have noticed that water sometimes drips from the exhaust of a car as it is running. Is this evidence that there is at least a small amount of water originally present in the gasoline?
Homework Equations
not sure if there is one.
The Attempt at a Solution
I'm not...
I was backing up our very large, high van into a parking spot today and then my parked neighbor to my right started pulling forward out of his spot as he had also backed in when he had parked. I certainly saw this movement not only in my periphery but also a bit in my line of sight as I was...
Hi, I have a 2004 Toyota Matrix with 270 000km. It's working great but today when i started my car the battery was going up to 17.2V (i have a battery voltage reader in the car at all time). It's the first time it went up there, it usually stays in the 13-14V. I know something is wrong and I...
Homework Statement
To stop a car, first you require a certain reaction time to begin braking; then the car slows down under constant breaking decelaration. Suppose that the total distance moved by the car during these two phases is 56.7 m when its initial speed was 80.5 km/h and 24.4 m when its...
I read somewhere that the "new car smell", which many of us like, is composed of formaldehyde, something that is not good for health. I also learned that it has tendencies to cause pulmonary diseases.
A good option to get rid of the smell is to drive with windows down. But doing that in the...
Hi guys , i am working in the automotive industry today i encountered a weird electrical issue and i am sure you guys have an explanation , i was using my multimeter to check continuity between different stuff , by mistake i put the leads on the car battery terminals i found the multimeter...
So far I have not found a satisfactory answer anywhere on the internet for this one. I have read the "race car suspension class" section but could not find the bit I am interested in. I am trying to simulate vehicle spin out / oversteer by reducing traction on the rear wheels when cornering. My...
This is about vehicle physics. I know how to calculate weight on each axle on a car during deceleration. Given the picture below:
The weight on the front axle is calculated as:
Wf=(c/L)*W-(h/L)*M*a
and the weight on the rear axle is calculated as:
Wr=(b/L)*W+(h/L)*M*a
where c and b are the...
I need to make the design of car floatation devices. In my case, the airbag/raft is for floating the car in case of floods. I am considering to use Sodium Azide, just like in car airbags, but it inflates very fast and shrinks in a short time. Is there any other chemical reaction that can produce...
I'm curious if car windshields / windows block UV (ultraviolet) light, the one from either the sun, or UV flashlights, like the Convoy S2+ Nichia 365nm.
Homework Statement
Truck is connected to a car with a rope of given length. The truck starts accelerating with a given acceleration and at some moment starts pulling the car. What is their common velocity just after the car starts moving?
Homework Equations
I know how to calculate the...
I have a Toyota Etios Liva, about three and a half years old. It is a petrol variant, with manual transmission. I am quite interested in the mechanisms of a car and good driving habits. Sadly, none in my family knows driving. My knowledge of driving habits extend to the manual given with the car...
Homework Statement
Freight car and hopper*
An empty freight car of mass M starts from rest under an applied force F. At the same time, sand begins to run into the car at steady rate b from a hopper at rest along the track.
Find the speed when a mass of sand m has been transferred.Homework...
[Mentor's note: two threads on the same topic have been merged]
I live here in Stephenville, TX and currently going to Tarleton for Civil engineering. A bit rusty and new to electrical components.
But anyways, here in town lawnmower racing is kind of a big event. Many of us have 600cc crotch...
Question: A car accelerates from rest at a rate of 2.0m/s^2 [N]. What is the displacement of the car at t=15s?
I tried
(2m/s^2 [N])(15s)=30m/s [N]
(30m/s [N])(15s)
=450m [N] but guess wrong :(
*Because the answer is 230m [N]
How to solve this? anyone
Hello,
This is an investigation I have been studying recently, can someone help with the following...
1. Homework Statement
Method:
1. Place a toy car at the top of a ramp.
2. Let it go.
3. Measure the distance it travels from the bottom of the ramp.
4. Add a 100 g mass to the car and...
is there an equation to describe object thrown from backseat to dashboard, in a sedan going 80 down the freeway
as compared to object thrown same distance outside of stationary vehicle?
Homework Statement -(View image attached)[/B]
A driver drives a car.The road has periodic small bump of 5 cm height and a distance of 5 cm. Car's shock observer works fine,damping the deflection to half each oscillation.Their length is 20cm increased if car weight(1500kg) does not...
Homework Statement
in tests to choose the most comfortable shock absorbents, 3 cars are used, with the same mass "m", and the same springs, but different shock absorbents. the graphs show the changes in car height when passing over a bump (y=0 being the normal state of the car).
.
.
.
-Witch...
Hi everyone!
I am a new one to the world of the LED lights. However, I have an oncoming project with LED strips. There will be 3 separate runs of a LED strip (4 meters, 4 meters and 6 meters each). In each run LED strip will be put in 1 meter long LED strip profile. I am planning to connect the...
How do hydrogen powered cars prevent the permeation of hydrogen through the valve used to fill the car's tank with hydrogen? Is a regular check valve used or is the valve special in some way?
I am tutoring a student, and this question was given to her. I believe it is not clearly stated and wanted your opinion. I hope this is the best forum for this.
1. Homework Statement
What is the minimum wattage required to accelerate a car of mass m (don't remember the value) from 0 to 28 m/s...
Hi everyone, thank you for reading my thread I know the question is weird but I can't seem to explain it otherwise.
My problem:
Basically I am finishing a final year project which I based on a Formula Student Vehicle. Using CAD I have the vehicle modeled, and through the model analysis and with...