# What happens if the velocity is positive and the acceleration is negative?

## What happens if the velocity is positive and the acceleration is negative?

Observe that the object below moves in the negative direction with a changing 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).

## When a cars velocity is positive and its acceleration is positive what is happening to the cars motion?

An object which moves in the positive direction has a positive velocity. If the object is speeding up, then its acceleration vector is directed in the same direction as its motion (in this case, a positive acceleration).

When a cars velocity is negative and its acceleration is negative?

An object which moves in the negative direction has a negative velocity. If the object is speeding up then its acceleration vector is directed in the same direction as its motion (in this case, a negative acceleration).

### Is acceleration positive or negative when falling?

We use plus and minus signs to indicate direction, with up being positive and down negative. Since up is positive, and the rock is thrown upward, the initial velocity must be positive too. The acceleration due to gravity is downward, so a is negative.

### What does a positive velocity indicate?

A positive velocity simply means that the object is moving in the positive direction, as defined by the coordinate system, while a negative velocity means the object is traveling in the other direction.

What is constant positive velocity?

Whatever characteristics the velocity has, the slope will exhibit the same (and vice versa). *If the velocity is constant, then the slope is constant (i.e., a straight line). *If the velocity is positive, then the slope is positive (i.e., moving upwards and to the right).

#### What does it mean when acceleration is negative?

According to our principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity. Thus, this object has a negative acceleration.

#### What does it mean when a velocity graph is negative?

As learned in Lesson 1, a positive velocity means the object is moving in the positive direction; and a negative velocity means the object is moving in the negative direction.

Is falling acceleration negative?

(2) The free-fall acceleration is negative—that is, downward on the y axis, toward Earth’s center—and so it has the value -g in the equations. The free-fall acceleration near Earth’s surface is a = -g = -9.8 m/s2, and the magnitude of the acceleration is g = 9.8 m/s2.

## What is a negative acceleration called?

Again, acceleration is in the same direction as the change in velocity, which is negative here. This acceleration can be called a deceleration because it has a direction opposite to the velocity.

## What does a negative velocity in UAM mean?

Velocity. A positive velocity simply means that the object is moving in the positive direction, as defined by the coordinate system, while a negative velocity means the object is traveling in the other direction.

Can a car have a negative velocity and acceleration?

From the math point of view, you cannot have “negative velocity” in itself, only “negative velocity in a given direction”. This quantity is a real number and can be negative. Consequently, when a car’s velocity is positive and acceleration is negative? If the speed is increasing, the car has positive acceleration.

### What happens when velocity and acceleration have opposite signs?

If velocity and acceleration have opposite signs, you slow down. Negative velocity = You move backwards. Negative acceleration = You slow down or you go faster in the backwards direction.

### Is it possible to have a positive and negative velocity?

Yes, absolutely! It is important to note here that, positive & negative velocities & acceleration are relative. the positive & negative of vector quantities are defined by which direction is defined to be positive. There is no absolute positive or negative velocity or acceleration.

What is the difference between speed and acceleration?

Acceleration tells you the rate at which the velocity is changing. Because the velocity is a vector, you have to consider the changes to its magnitude and direction. The acceleration can change the magnitude and/or the direction of the velocity. Speed is only the magnitude of the velocity.