Car Definition and 999 Threads

A stunt car is driven along a flat train car. The stunt car is moving toward the engine of the train. How would you calculate the velocity of the stunt car relative to earth? Im in physics 11 and we are almost done our velocity chapter and this question was on our review.

When a car moves forward, the wheel turns it exerts a force on the road in the opposite direction of travel, and friction counter acts it. the wheel turns and the car moves forward This implies that friction on the wheel is acting in the direction of the car moving. Though I thought that...

Homework Statement A 1070-kg car is held in place by a light cable on a very smooth (frictionless) ramp, as shown in the figure(Figure 1) . The cable makes an angle of 31.0 ∘above the surface of the ramp, and the ramp itself rises at 25.0 ∘ above the horizontal. [/B] http://imgur.com/gkOQuRq...

Homework Statement Two-thirds of the weight of a 1500 kg car rests on the drive wheels. What is the maximum acceleration of this car on a concrete surface? μs = 1 Homework Equations F = ma[/B]The Attempt at a Solution The answer I got is 6.53 m/s^2 , but I want to make sure the answer is...

When looking through polarizing glasses at the rear window of a car (tempered glass), a black and white pattern appears. Supposedly, this is the same kind of birefringence that causes colored fringes in a plastic sheet, seen through a polarizer. It is clear that retardation and interference in...

Homework Statement What is the minimum coefficient of friction needed between the tires and the ground so you make the turn safely?[/B] Car= 1394.7kg You=75kg Radius of turn = 40m Velocity = 20m/s Homework Equations Fnet = MAc (Ac = centripetal Acceleration) = Force of friction Force of...

People keep asking about setting a car battery on a concrete floor somehow ruining the battery. Here is the final answer on the subject. I have the 1930s Popular Science with the original tip in it (but don't ask me which issue). The auto tip was: "Leaving a car battery on a concrete floor...

At the outset, I want to explain that this is a problem I came up with myself. It's not actually homework, and I suspect it is deeply conceptually flawed in some manner that I have yet to determine. 1. Two point charges of like polarity, ## q_1 = q_2 = 1C ##, start out separated by distance ##...

Homework Statement Theres a pic of the question Homework Equations Simple motion equations The Attempt at a Solution I didnt understand what the pigeon is doing in the question ?

Homework Statement I was wondering about how the placement of weight affects Soap Box Cars. I have been racing them for 5 years now, and I cannot find any information. I was wondering if there was a formula to find the relationship between speed and weight, and how to solve it. For instance, if...

If a car is traveling at a constant speed of say, 60MPH, is the acceleration of the car 0, or is it equal to the drag and rolling resistance it's facing?

My idea for a flying car...The image below shows my idea for what i call a flyer [flying car/vehicle]. The basic principle is to utilise lift instead of thrust momentum as the means of take-off and flight. This means it won't blow air everywhere and doesn't have dangerous blades [also has safety...

Homework Statement Car A, having a mass of 1.30 x 10+3kg is traveling at 60.0 km/h due east when it collides with car B, having a mass of mass 1.70 x 10+3kg traveling at 40.0 km/h due west. If the collision is totally inelastic, find the final velocity of car B. .Homework Equations I'm using...

The part that I roughly understand: 1) Drag equation, drag increases by square of velocity, thus if it was only factor to be taken into account then the lower speed the better. 2) In case of cargo ships there is a policy of decreasing speed to reduce fuel usage, called "slow steaming". It...

This is a practice problem very similar to my homework question just with different values. 1. Homework Statement A motorcycle officer hidden at an intersection observes a car driven by an oblivious driver who ignores a stop sign and continues through the intersection at constant speed. The...

Homework Statement While traveling on the highway with your 1000kg car, at 115.2 km/h, where you’re ABS (automatic braking system) is disabled. This means braking is relying solely on the friction of your tires with the road when they stop spinning. A dear jumps into the road 50 meters in...

Homework Statement A car comes to a stop in 7.5 meters while braking at a rate of 2.0m/s each second. A) What was the initial speed of the car? B) What is the speed of the car after 0.5 seconds? Homework Equations Final velocity = Initial velocity + acceleration*time The Attempt at a Solution...

Homework Statement A 1900 kg car moves along a horizontal road at speed v0 = 23.6 m/s. The road is wet, so the static friction coefficient between the tires and the road is only μs = 0.218 and the kinetic friction coefficient is even lower, μk = 0.1526. The acceleration of gravity is 9.8 m/s2...

Hello, I'm working on a car simulation and I'm attempting to implement a manual transmission simulation into the game. My question is, how do you find the rate of change of the engine's RPM when the gas pedal is pressed in the car?

So I just learned Gausse's Law and it makes me think: People always say you're safe in a car if it get struck by lighting because of the rubber tires (odd, because tired are like 90%carbon) but isn't it also because a car is a Gaussian sphere? The interior is insulated, sort of, right? If this...

Hi everyone, I want to build a car-model which should be good enough to study under-steer/over-steer and test various safety algorithms like ABS, TCS, ESP. Initially I made a quarter car model, here I could implement simple ABS,TCS. Quarter car model supports only longitudinal dynamics and is...

Hi, I'm new to PF, and I just figured I'd explain myself. I'm a High School freshman, and I love engineering. I love robotics, aerodynamics, astronomy, astrophysics, and computers. My favorite scientist is Neil DeGrasse Tyson. (I've read all his papers). My two biggest hobbies are computers and...

Homework Statement A ball bearing rests on a ramp fixed to the top of a car which is accelerating horizontally. The position of the ball bearing relative to the ramp is used as a measure of the acceleration of the car. Show that if the acceleration is to be proportional to the horizontal...

Homework Statement For part c ii) of this question, the new distance is now 1/4 of the previous distance as both acceleration are the same. But why are both the acceleration the same? Homework Equations v^2= u^2 +2as The Attempt at a Solution I know that the method is by using the above...

Homework Statement There is one car which got stolen which goes from the point 30 in the negative sense of the "x" axe towards the point 0 and has a constant speed of 160 km/h. Another person notices the stealing 3 minutes later and takes another car to catch the stealer. What must be the...

My car alternator runs at 16 to 16.5 volts when I hit the gas, and 15v idling. This is scaring me and a new one is too expensive. It could be my computer or pulleys in the wrong too so I can't risk buying a new one and still having the problem. It turns off my speaker amplifier as soon as I hit...

Homework Statement A car is traveling with a constant speed v on a straight road which forms an angle α with nearby straight wall. When the car is at a distance l from the wall the driver presses the horn briefly. What distance would the car have traveled (from the spot of the honk) when the...

-- Hello. When people started flying it was quite bumpy because of turbulence below 10000 meter. So todays air travel is mostly above 10000 meter to avoid a bumping turbulent ride. To develop a future flying car this must be dealt with because people don't want to be thrown around in the...

Hello , this is my first post. I just had this crazy idea if you can make a car that you can drive forever. I just want to check if this is possible. I know that the "motor powers the generator and generator powers the motor" thing doesn't work. Cause it isn't 100% efficient and bla bla bla...

Hello, this is my first post. This question is related to my final thesis. I'm calculating the heat exchange area of a radiator through heat exchange equations: Q = U*A*LMTD I have as data Q, and LMTD (this one through trivial calculations) In order to calculate U, I need the coefficients...

Homework Statement A rope is attached to a wall on one end and to a car on the other end. Someone pushes up on the rope and the car starts to move when the rope makes an angle of 5o with the floor. Mcar=2500kg Homework Equations ΣFx=ma ΣFy=maThe Attempt at a Solution Look at the car and the...

Homework Statement A collision in Phystown is being analyzed by the O.P.P. accident analysis team. A 1000 kg Toyota known to be moving at 65 km/h [W] collided at an intersection with a 3000 kg SUV moving [N]. After the collision, the two vehicles "stuck" together and the police estimate that...

Hello, I am new to this site as well as to electrical theory. I recently took a second semester physics course and stumbled upon a great deal of curiosity in the electricity and magnetism portion of the class. I am taking a few courses pertaining to electricity&magnetism as well as engineering...

Homework Statement In the figure here, a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 223 m. If the red car has a constant velocity of 20.0 km/h, the cars pass each other at x =...

How to determine the "a" in f=ma or, a=f/m. If a 2200 lb car Is stationary and is struck by a 3300 lb vehicle and is propelled 27 feetfrom the impact? The 3300 lb vehicle had to be traveling how fast?

I am programming a game in which there are no outside forces acting on the car aside from the engine. I will not be having gears, so that is not a factor. I just want to know if there is an equation I can use to calculate the car's speed at any given time. The car will start off accelerating...

Homework Statement In the figure here, a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 223 m. If the red car has a constant velocity of 20.0 km/h, the cars pass each other at x =...

I've heard the analogy that a high torque car is like a bodybuilder, it is powerful but slow. And a high horsepower car is like a sprint runner, it runs fast, but not as powerful. Considering other factors constant. if each tries to ride a bicycle to a certain speed, and the runner is given a...

Homework Statement You have two cars traveling on a course to crash into each other, a fly is on one of the cars. The question is how much distance does the fly cover until the cars crash? V= velocity,t=time Df=? p/v1,v2 lets say the cars are traveling at the same speed This is a sketch of the...

1) While running with a constant velocity ; how do we consume energy? : Only due to vertical movement of our bodies, right? 2) When driving a car in a constant velocity; how this car could consume energy? It does not move upright-downright (in a very straight road).

Hi, I'm a beginner in mechanics so I need some help with a project I started. My project consists of a small kart-like car. The car will be Rear-Wheel-Drive and Rear-Engine too (RR layout). and I am willing to use a small 110cc moped engine. I have a trike Differential Gear for the rear shaft...

Homework Statement I have the following situation: car 1 is distance di ahead of car 2. Car 1 has either a constant speed v1 or accelerates with a1 (I eventually want to cover both cases). Car 2 accelerates faster than car 1. Car 2 is eventually going to catch up with car 1. I want to calculate...

As per control theory, if a bounded input produces a bounded output then a system can be said to be stable. So assuming that I press my cars gas pedal such that it reaches a fixed position, then the reaction of my car would be to reach a corresponding velocity, and assuming the road to be even...

Homework Statement Two cars are approaching a perpendicular intersection without a stop sign. Car 1 has a mass m1=900kg and is heading north at v1=25m/s. Car 2 has mass m2=700kg and is heading west at an unknown speed v2. The two cars collide at the intersection, and stick together as a result...

I'm setting up an amplifier which is intended for use in a car, and I'm not using it in one. I'm trying to power it through a typical DC 250 volt wall outlet. What kind of transformer should I use? (I'm also trying to power a car stereo with it as well)

whats the thermal conductivity for car insulation? roof or dashboard, basically the thermal conductivity of foam used in most cars.

Homework Statement A car traveling at 60 kmph overtakes another car traveling at 42 kmph. Assuming each car to be 5.0 m long, find the time taken during the overtake and the total road distance used for the overtake.[/B]Homework Equations Relative Velocity of a body A with respect to another...

Hi everyone! It's my first time working with vibrations (and on this site) and I'd like to know what the best device is for simulating a car engine's vibrations is. Basically I want to generate a random range of frequencies. I would like to keep it as small and for it to use as little power as...

I'm building an excel dragstrip model. I already have a working model that incorporates force exerted at the rear tires, force of drag, and force of rolling resistance. Now, I want to take into account the linear force that acts on the front tires that is required to accelerate them. There is...

Good afternoon everyone! I've exhausted my initial ideas for supporting 1500 watts of power in the trunk of my car, for intermittent use with a wall plug connection. My first thought was a simple power inverter, however, ideally I won't be running this power from my car battery. This has proven...