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What is the negative acceleration?
Negative acceleration is the state of a body whose velocity in a specified direction is becoming smaller. If you apply the brakes while driving a car, the car (and you) will undergo negative acceleration in the direction in which the car was moving.
Would you consider a car turning around a corner at a constant speed to be accelerating?
It depends on which direction you are resolving the acceleration from. If you use the original direction of the car as it turns it is decelerating as the speed it is moving in that direction is decreasing. If you resolve from the direction which the car will be going towards then it is accelerating as its speed in that direction is increasing.
In terms of positive negative and zero acceleration how would you describe the motion of a student moving in the caferteria lunch line?
In the cafeteria lunch line, a student experiences positive acceleration when they speed up to catch up with the person ahead. If they maintain a constant pace while waiting in line, their acceleration is zero, indicating no change in speed. Finally, if the student slows down, perhaps to avoid bumping into someone or because the line is moving slower, they experience negative acceleration. Overall, the student's motion can vary between these three states depending on the dynamics of the line.
What would the acceleration of a turtle that is moving with a constant velocity of 0.25 miles per second to the right?
The acceleration would be zero because the turtle is moving at a constant speed
What then can you say about the acceleration of the moving car?
The answer depends on when "then" is.
Does acceleration mean that a moving object is decelerating?
No, acceleration refers to a change in an object's velocity, which can either be a speed up (positive acceleration) or a slow down (negative acceleration or deceleration). If an object is decelerating, its velocity is decreasing over time.
If velocity is positive which would most likely yield a negative acceleration?
If an object is moving in the positive direction, a negative acceleration would most likely occur if the object is slowing down, such as when it is decelerating or coming to a stop. Negative acceleration indicates that the object's velocity is decreasing over time.
What happens when velocity is negative and acceleration is positive?
When velocity is negative and acceleration is positive, the object is moving in the negative direction and its speed is increasing. This means that the object is slowing down as it moves in the negative direction - essentially decelerating.
The speed of a car moving on a straight road is decreasing on applying the brakes its velocity and acceleration are in same direction?
If the speed of the car is decreasing while the car is still moving in a straight line, this means that the velocity and acceleration are in the same direction. This is because the car is decelerating, which results in a negative acceleration in the same direction as the velocity. This negative acceleration causes the speed of the car to decrease over time.
A negative slope on the velocity vs. time graph indicates that the object is not accelerating.?
Actually, a negative slope on a velocity vs. time graph indicates that the object is decelerating or moving in the opposite direction. If the slope is constant, the object is moving at a constant velocity.
A classmate in the physics state that the negative acceleration always mean that a moving object is decelerating is that true?
It is not true. It means that the object MIGHT be decelerating but not "always" (as your friend says). Instead, think of it this way... We start by clarifying that there is no such thing as "negative acceleration" per se. That is, that acceleration is a vector composed of an absolute value scalar and a direction. So "negative acceleration" actually refers to an acceleration which just happens to be in the negative direction of whatever coordinate system you've chosen to define for the particular problem. We define a coordinate system (for a two dimensional universe to keep things simple) with positve/negative x and y. If the object starts out already moving in the positive X direction, then to apply an acceleration in the negative direction would mean there is deceleration. If the object is stationary or moving in the negative X direction, then applying an acceleration in the negative X direction would actually be accelerating the object. In other words, the reference from has to stay constant for there to be meaningful discourse on the subject. By the same note, even moving in the positive X direction, if the object is acclerated in the negative Y direction then the object is actually accelerating.
True or false Negative acceleration always means that a system is slowing down?
false A car can have a negative acceleration and be speeding up. A negative acceleration determines the direction of the acceleration A car with forward acceleration will speed up in the forward direction A car moving forward with a negative acceleration will slow down A car not moving with a negative acceleration will speed up in the backward direction A car moving backward with a negative acceleration will speed up in the backward direction
What is an object's acceleration if its moving at 30 miles per second and comes to a stop in 5 s?
The object's acceleration is -6 miles per second squared. It is negative because the object is decelerating, or slowing down. The negative sign indicates the acceleration is in the opposite direction of the object's initial velocity.
Can the velocity of an object be negitive when its acceleration is positive?
That just means that the velocity and acceleration are in oppposite directions ... exactly the situation when a car is slowing down for a stop, or a ball is tossed upward and hasn't reached the peak yet.
What is a moving object that has a velocity vector and acceleration vector in the opposite direction?
This is a moving object that is slowing down.
Is it possible that speed is zero while the acceleration is non -zero?
Yes. You could be moving left with an acceleration to the right (decelerating) and come to a stop before you begin to move to the right.
It is physically impossible for an object to have a negative acceleration and yet be speeding up?
Not yet possible, maybe later. Acceleration is the first derivative of the speed by definition. So this comes back to a mathematical question. When do we have a first derivative negative? The only possibility is that the function has a negative slope, meaning in the case of the object trajectory, that the object's speed is decreasing. If you could have objects decelerating while speeding up you should also think about accelerating objects winding down and steady objects wandering abound. As this was not easy to find conceptual representation for such situations, God just said to objects "thou will stop speeding up when you have a negative acceleration, capito?" <<>> The answer could be 'yes' if the body has a negative velocity as well as a negative acceleration (relative to a given system of coordinates). In that case the speed is increasing even though the acceleration is negative.
