What does it mean when you have a negative velocity?

An object which moves in the negative direction has a negative velocity. If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion (in this case, a positive acceleration).

What does positive velocity and negative acceleration mean?

An object which moves in the positive direction has a positive velocity. If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion (in this case, a negative acceleration).

What do you mean by negative acceleration?

An object with negative acceleration could be speeding up, and an object with positive acceleration could be slowing down. Mathematically, a negative acceleration means you will subtract from the current value of the velocity, and a positive acceleration means you will add to the current value of the velocity.

What is acceleration vs velocity?

Velocity is the rate of change of displacement. Acceleration is the rate of change of velocity. Velocity is a vector quantity because it consists of both magnitude and direction. Acceleration is also a vector quantity as it is just the rate of change of velocity.

What is meant by negative acceleration Class 9?

Answer: If the velocity of a body decreases with time, then its final velocity is less than the initial velocity and thus its acceleration is negative. Negative acceleration is called retardation or deceleration.

Which is an example of negative acceleration?

Negative acceleration is also termed as retardation. Some examples of negative acceleration from our daily lives are: (1) If we throw a ball with some initial velocity towards the sky, then the body goes up and attains a particular height and there it stops for a while and then comes back to the earth.

What is negative acceleration give an example class 9?

If the velocity of a body decreases with time, then its final velocity is less than the initial velocity and thus its acceleration is negative. Negative acceleration is called retardation or de-acceleration. For example, when brakes are applied to a moving truck, its velocity gradually decreases.

What do you mean by negative acceleration Class 9?

What is negative acceleration give one example of negative acceleration?

(1) When we apply brakes in a moving car, then negative acceleration acts on it and the car stops. (2) When we throw a ball upwards, then also negative acceleration acts on it. Thus, when the ball reaches the highest point, the velocity of the ball becomes zero.

What is the other name of negative acceleration?

Negative acceleration is also called retardation.