## Do different cars have different speeds?

But even then the engine type doesn’t matter, It depends on transmission and differential gear ratios, tire size and the torque of the engine. They all can have same RPM or any of them can have higher or lower RPM than the others, it’s all about the amount of torque and the shape of the torque curve.

## Why do cars have speed limiters?

Most drivers simply don’t have the reflexes it takes to handle those kinds of speeds. Speed limiters are also there to protect the engine and the car itself. An engine’s lifespan drops significantly if it’s running at maximum speed all the time because it is being made to work much harder than it normally would.

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What determines car top speed?

6 Things Which Decide Top Speed of Your Car

• Power of the Engine.
• Gear Ratio.
• Weight of the car.
• Aerodynamics of the car.
• Grip of the tires on the road.
• Calorific value of the fuel used.

What is momentum and is it different if two vehicles have different masses but same velocity?

When two bodies are moving with same velocity , the momentum of heavier mass will be more. For two bodies having same mass but moving with different velocity , the body moving with higher velocity will possess higher momentum. When the momentum of two bodies are same then the lighter body possess higher velocity.

### Why does my GPs show different speeds to my speedometer?

Driving about you may have noticed that your GPS may calculate a different speed than you car’s meter. Speedometers are allowed to overstate speed by up to 10 per cent, but never to understate it. Speedos therefore often indicate a higher speed than GPS. At a steady speed on a straight road, sat-nav is likely to be more accurate than the speedo.

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### Why does my car’s speeding appear faster than it really is?

Case in point, at highway speeds it will almost always show a faster rate than you’re actually traveling. And if your car’s European, the problem’s even worse. Here are the reasons why: Tiny changes in a tire’s circumference can be caused by over- or under-inflation, or by the wearing-down of tread over time.

What is the difference between GPS and Speedo?

Speedos therefore often indicate a higher speed than GPS. At a steady speed on a straight road, sat-nav is likely to be more accurate than the speedo. GPS devices calculate speed by determining the time taken to travel a given distance, so bendy roads or rapid acceleration/deceleration distorts the readings.

How much can a speedometer be off?

On the high side, it’s allowed to read up to 10\% above the actual speed plus four or six kilometers per hour, depending on the type of vehicle. Compare this chart to the first one. The most a speedometer can be off at that same 100 mph (160 kph) is nearly 13 mph.

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