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How can you have negative acceleration but not negative speed?
The negative part in negative acceleration is indicating direction, as acceleration is a vector quantity. Speed however, is a scalar and has magnitude only and therefore cannot be negative. An example could be -2.6ms-2 meaning that there is an acceleration of 2.6ms-2 but in the opposite direction to other vectors.
Can a car have negative velocity and negative acceleration?
It cannot have negative velocity, it can have negative acceleration.
Can there be a positive acceleration and a negative acceleration?
Yes, acceleration can be positive and negative because acceleration is a vector. It has both direction and magnitude. The direction is what makes it positive or negative. Negative acceleration is usually called deceleration.
When acceleration upward or downward direction is taken positivw or negative?
If it is gravitational acceleration then it it is positive in downward and negative in upward direction..if it is not gravitational acceleration then it is depending upon the value of acceleration.
Difference between negative and positive acceration?
Positive acceleration ==> speeding up Negative acceleration ==> slowing down
A car approaching a red light is an example of?
Negative acceleration
When final velocity is less than initial velocity is an example of?
Deceleration (or negative acceleration).
What is positive acceleration negative acceleration?
Positive is speeding up and negative is slowing down
What is negative accelertion?
Acceleration is any change in velocity. Negative acceleration is when the change is such that the speed decreases.
When is acceleration neg?
Acceleration is negative if velocity is decreasing with time. Since velocity is a vector this can occur in one of two ways: 1) you are slowing down in the direction of motion and the velocity in that direction is defined as positive (this is what we usually mean by negative acceleration) 2) you are speeding up in the direction of motion and the velocity in that direction is defined as negative. An example of this is an object launched into the air which immediately starts to decelerate in it's upward velocity, reaches it's highest velocity, and then begins accelerating towards the ground. If we call the velocity upward a positive velocity, then when it starts falling, it has negative velocity. Note that acceleration (due to gravity) is negative the whole time.
What is negative accaleration?
It's acceleration in the direction opposite to the direction you defined asthe positive one when you began your observations and analysis.More appropriate to the level of comprehension suitable for the masses,negative acceleration is 'slowing down'.
What is called negative accelarration?
Deceleration. Negative acceleration = Velocity is decreasing by time. Positive acceleration = Velocity is increasing by time. Zero acceleration = Velocity is the same by time.
Does a negative acceleration necessarily imply that a body is slowing down?
No. Negative acceleration simply means it is accelerating in a particular direction.
An object slowing down has what type of acceleration?
Negative acceleration, also known as deceleration.
How would a graph of negative and positive acceleration differ?
This depends on what the graph represents. If it is a graph of velocity on the vertical and time on the horizontal, then if acceleration is at a constant rate, the graph will be a straight line with positive slope (pointing 'up'). If acceleration stops, then the graph will be a horizontal line (zero acceleration or deceleration). If it is deceleration (negative acceleration), then the graph will have negative slope (pointing down).
Why do scientist often refer to deceleration as negative acceleration?
Deceleration is often referred to negative acceleration because deceleration is not AA commonly used word.
If your speed slows down you will have what acceleration?
If your speed slows down, yYou will have negative acceleration or deceleration.
