Which is faster???

Question

If I have 2 vehicle moving at the same speed eg. 80km/h.... which is faster for car versus truck? In fact any vehicle at all....

Is there anything to do with their design or resistance to air?

Is there anything to do with the momentum? Because the momentum of the truck would definitely be greater than that of a car...

Answer 1

Vehicles moving at the same speed will, by default, be equally fast, if they are both at the same net acceleration.

You need to burn more fuel for the truck to counter the additional mass/weight, road and air resistance compared to the car, to achieve the same net acceleration.

However, if the 2 vehicles are at the same velocity and acceleration at a certain point in time, without any further correction (eg. revving up for the heavier vehicle) to maintain them both at the same acceleration, the truck will lose speed (ie. the car will end up being faster) since the deceleration effect of air/road resistance and inertial mass of the heavier vehicle will be greater.

Answer 2

Ummmm, you just stated they were moving at the same speed, so neither is faster.

There are many factors that will determine which would have a higher top speed and/or better acceleration (and this is true for any vehicle), including aerodynamics, power-to-weight ratio, type of transmission, type of drive (2 or 4 wheel), type of tires (which affects traction). A terribly un-aerodynamic truck with a jet engine will likely beat a Ferrari in a drag race as it has incredible power-to-weight.

Does that help?

Answer 3

Since both vehicles are traveling at the same speed, neither vehicle is faster in this case. However, as to acceleration, cars usually accelerate faster than trucks, at least on paved roads. Off road, you'll get better performance from a truck.

Answer 4

Well, lets think about this one in terms of aerodynamics. if any two vehicles are moving at the same speed, it is expected for them to move at the same speed no matter what design. Wrong! see the thing is that the enviornment in which they are moving is also a factor and certain designs would suit certain enviornments if a car is slim, it can "cut" through air which defy air resistance. so yeah the design does take place. also think about englines of different vehicles.

Answer 5

Your kidding right? of course they are both at the same speed so there is no one faster than the other.

The car may have a faster take off and reach 80 before the truck and vica versa but they both will achieve their speed of 80.

Answer 6

if they are going the same speed then neither one is faster.. if your asking which one got to that speed quicker. It has alot to do with air resistance, also whats under the hood. A v-6 Vs. a V8 the v8 would be much faster..

Answer 7

Speed is just a mass traveling a distance over time. They are the same speed. Resistance and size do not factor in unless you are talking about coefficients, drag or maybe efficiency.

Answer 8

Ithink design of vehicle should be sharp so that it can decrease aerodynamic drag or air resistance

Answer 9

both are moving just as fast since they have the same speed.

but the truck has greater kinetic energy since it has more mass.
K.E. = 1/2 m v^2

Answer 10

Mind waves first answer.second answer is yes their is resistance
to air but in space it dosen't want any kind of resitence.but the two vechile wiil be same speed.