# Question: Do Lighter Cars Go Faster?

## What limits the top speed of a car?

A speed limiter is a governor used to limit the top speed of a vehicle.

For some classes of vehicles and in some jurisdictions they are a statutory requirement, for some other vehicles the manufacturer provides a non-statutory system which may be fixed or programmable by the driver..

## What makes a car faster torque or horsepower?

Torque multiplied by rpm returns horsepower. Basically, the faster the crankshaft spins with the same amount of force, the more power an engine will make. A car with more hp than torque will always be quicker since this gives a car acceleration and speed. … Meanwhile, the gasoline engine will rev to 5,252 rpm.

## How can I increase the top speed of my car?

Increasing aerodynamics: cover your wheel wells with air dams, tape over body panel gaps, cover some of your front grill area with tape (be sure sufficient air comes through for cooling), cover the underside of your car to smooth it out. Less drag = higher top speed.

## What is better hp or torque?

Horsepower is how rapidly the vehicle can perform that work. For instance, a lightweight sports car that operates at high rpm may have high horsepower, but low torque. … Because there is generally a limit on how fast you can spin an engine, having higher torque allows for greater horsepower at lower rpms.

## Does weight affect braking distance?

The weight of a car does affect its braking distance. The greater the mass of an object, the greater its inertia (tendency to stay moving once moving in this case). If you are comparing some heavier models that stop in less disatance than a lighter car, this is because the car is engineered to do so.

## Does more weight mean more acceleration?

states that the acceleration of an object increases with increased force and decreases with increased mass. … Notice how mass and force affect acceleration. Newton’s second law. The acceleration of an object increases with increased force, decreases with increased mass, and is in the same direction as the force.

## Does Weight Affect horsepower?

Horse power doesn’t matter with the weight of the car. It is the power of the engine. Noting to do with the frame. But if you want to increase the net force exerted to the car in the direction of progress to get better ability in transportation, you have to consider particular factors.

## How long does it take a car going 30 mph to stop?

Stopping DistancesSpeedThinking Distance 2Braking Distance30 mph30 feet45 feet40 mph40 feet80 feet50 mph50 feet125 feet60 mph60 feet180 feet3 more rows•Aug 2, 2016

## Do heavier or lighter cars go faster?

However, the heavier an object is, the more force is required to make it accelerate. This comes into cars as a lighter car with the same engine as a heavier version will accelerate quicker. This is all summed up by newtons Force=Mass*Acceleration.

## Do heavier cars stop faster?

Yes, if everything else is the same (brakes, tires, wheel size, ….) so the weight is the only difference then it will take longer for a heavier car to stop than a lighter one, and its greater mass and inertia is why.

## What shape makes a car go faster?

Our hypothesis is that the shape of the cars will make a difference in how fast they go. This is because a car with a more aerodynamic shape should go faster. The more aerodynamic the shape, the less the car will stall from the air as it moves.

## What makes your car go fast?

The speed of a vehicle is determined by a large combination of factors which include engine efficiency and performance, weight, and the programming of its electronic parts. The two most important things you can provide to your car to increase its speed is air and fuel.

## Do spoilers make a car faster?

because decades of testing has proven that rear spoilers make cars perform better at high speeds. … Spoilers on the front of a vehicle are often called air dams, because in addition to directing air flow they also reduce the amount of air flowing underneath the vehicle which generally reduces aerodynamic lift and drag.

## Does size affect speed?

3 Answers. where t is the time taken. … Whatever be the size of two objects; if they have the same speed, they will cover the same distance in a given time. But, usually objects with a better aerodynamic design will move faster (i.e. have a greater speed) than a similar object with a poor aerodynamic design.

## Does Weight Affect car speed?

Weight affects speed down the ramp (the pull of gravity), but it’s the mass (and friction) that affects speed after a car leaves the ramp. Heavier cars have more momentum, so they travel further, given the same amount of friction.

## How can I make my car lighter?

Remove or swap heavy electrical components.Fit lighter body panels.Replace glass windows with polycarbonate.Lighter wheels.Put less fuel in your tank.Lose bodyweight/friends. Image source: Magnus D on Flickr.

## How many feet does it take to stop a car going 25 mph?

56.25 feetReaction Distance = Speed, Calculate Stopping Distance: Therefore, if you are driving 25 mph, it will take you approximately 56.25 feet to stop your car.