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Is a car increasing in speed when going down a hill positive acceleration?
Wiki User
∙ 12y ago
Yes. It is accelerating because its velocity is changing. Velocity is a combination of speed and the direction of travel (this combination is called a vector, and it can ce viewed as a line segment representing the speed - so twice as fast is twice as long - pointing in the direction of travel (drawn with an arrow tip on the end of the line segment to show the direction of travel). Any change in this vector is called acceleration. Since the length of the vector on this case is increasing, it's called positive acceleration.
Wiki User
∙ 12y ago
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Is increasing acceleration the same as positive acceleration?
No. "Positive acceleration" means increasing speed. The acceleration is usually constantin typical Physics examples and applications.
When is acceleration of an object positive?
When its speed is increasing
What is meant by positive acceleration and negative acceleration?
Positive acceleration = speeding up; speed increasing in the direction you're moving.Negative acceleration = slowing down; speed decreasing in the direction you're moving,or speed increasing in the opposite direction.
Does acceleration have a negative or positive value if the velocity is increasing speed?
In this case, acceleration is positive. Negative acceleration would cause the object to slow down (decelerate.)
How is velocity of zero different from an acceleration of zero?
Velocity basically means how fast you are going. Acceleration means how much your speed is increasing. So if there is zero velocity that means the object is not moving. If there is zero acceleration, that means that the speed is not increasing but there is actual speed and the object is not increasing it's speed what ever that may be.
Is increasing acceleration the same as positive acceleration?
No. "Positive acceleration" means increasing speed. The acceleration is usually constantin typical Physics examples and applications.
When is acceleration of an object positive?
When its speed is increasing
What is meant by positive acceleration and negative acceleration?
Positive acceleration = speeding up; speed increasing in the direction you're moving.Negative acceleration = slowing down; speed decreasing in the direction you're moving,or speed increasing in the opposite direction.
What is an object that has velocity and acceleration vector going the same direction?
Moving in the positive direction at an increasing speed. (Accelerating positively)
Does acceleration have a negative or positive value if the velocity is increasing speed?
In this case, acceleration is positive. Negative acceleration would cause the object to slow down (decelerate.)
How is velocity of zero different from an acceleration of zero?
Velocity basically means how fast you are going. Acceleration means how much your speed is increasing. So if there is zero velocity that means the object is not moving. If there is zero acceleration, that means that the speed is not increasing but there is actual speed and the object is not increasing it's speed what ever that may be.
Is it possible to have positive acceleration?
Sure. That just means your speed is increasing. It happens every time the light turns greenand you stomp the gas in order to get going again.
How is increasing speed acceleration?
By definition acceleration is the change in velocity (speed).
Is it possible for a mass to be speeding up while its acceleration is decreasing in magnitude?
Sure. If there is any positive acceleration (in the direction of motion) then the speed is increasing. It doesn't matter whether the acceleration is increasing, decreasing, or staying constant. As long as acceleration (in the direction of motion) remains positive, the thing keeps speeding up.
If a ball rolls down a hill does its speed or acceleration increase?
If you roll a ball up a hill it undergoes negative upward and positive downward acceleration.
Does acceleration refers to increasing speed decreasing speed or changing direction?
Increasing speed
What is positive accelerations?
Positive Acceleration refers to the force acting on an object whose speed increases as it moves away from its original starting position. If the velocity is increasing along with time it is called positive acceleration, and if the velocity decreases it is negative acceleration.
