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# Can the car accelerate if the speedometer of a car indicates a constant speed?

Updated: 11/4/2022

Wiki User

12y ago

no. see the definition of acceleration. it can remain a constant speed while the velocity changes.

*Edit* Actually, the answer is yes. The algebraic formula for acceleration is displacement over time but you are only thinking in terms of linear motion, or in the case of this scenario, a straight road. But when the car follows the road as it snakes or rounds a bend its acceleration is changing even if its speed is not.

A more specific definition of acceleration is the change in velocity over the change in time. Velocity is a measurement of speed but with a direction and when an object goes into a circular motion path (or any motion path that isn't linear) its velocity is continually changing and a change in velocity means a change in acceleration.

Plainly put, if the car turns a corner with a constant speed, the magnitude is constant but the acceleration vector is not.

Wiki User

12y ago

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Q: Can the car accelerate if the speedometer of a car indicates a constant speed?
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Related questions

### An instrument which indicates the speed of a motor vehicles is?

It is a speedometer.

Speedometer

### What does a speedometer do in a car?

It indicates the speed of the car.

### What indicates the speed of vehicle?

That would be called the speedometer.

### What is the indicates speed of vehicle?

That would be called the speedometer.

### Can a particale accelerate if its speed is canstant?

No, a particle cannot accelerate if its speed is constant. Acceleration is the rate of change of velocity, and if the speed (magnitude of velocity) remains constant, then the acceleration is zero.

### Does a car accelerate rounding a curve at a constant speed?

No, a car does not accelerate when rounding a curve at a constant speed. Acceleration occurs when there is a change in speed or direction. In this case, the car is moving at a constant speed but is changing direction, not accelerating.

### Does light accelerate?

Light does not accelerate in the traditional sense, as it always travels at a constant speed of approximately 299,792 kilometers per second in a vacuum. This speed is a fundamental constant in physics known as the speed of light.

### Does a straight line on a motion graph indicates constant speed?

Yes. A straight line indicates constant speed =dy/dt= kt.

no

### Can an object accelerate and have a constant speed at the same time?

No, an object cannot accelerate and have a constant speed at the same time. Acceleration is a change in velocity, which includes speed or direction. If an object has a constant speed, it means there is no acceleration occurring.

### Can the car accelerate if the speedometer of a car indicates a constant speed of 40km per hour?

Acceleration is the derivative of velocity, meaning a change in velocity. Velocity is a vector, comprised of magnitude and direction, that is speed and where you are heading. Thus, turning, changing lanes, flipping the car while on cruise control, etc, would all comprise a change in velocity (specifically the direction) and thus is an accelaration.