An object moving in the negative direction (negative velocity) is speeding up. A positive velocity means it’s going in the positive direction (like forwards), and a negative direction is backwards.

Speed is the magnitude of velocity. Velocity comes with direction, it indicates a speed at a direction. If velocity becomes negative, it is that speed in the opposite direction.

Velocity. Since the final position of the object (rfinal) may be either positive, negative, or zero, and either larger, smaller, or the same as the initial position (rinitial), the velocity may be positive, negative, or zero. The sign of the velocity depends on the coordinate system chosen to define the position.

Answer: Yes, an object can have zero velocity and still be accelerating simultaneously. Let us consider an object moving in the forward direction. Now, suddenly a force acts on it and tries to accelerate the object in the reversed direction.

To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing.

No, a body can not have its velocity constant, while its speed varies. Rather, it can have its speed constant and its velocity varying. The velocity of an object can be changed by: Change of speed.

If you always choose the current direction of motion as positive, then an object that is slowing down will always have a negative acceleration.

Deceleration always refers to acceleration in the direction opposite to the direction of the velocity. Deceleration always reduces speed. Therefore, it has negative acceleration in our coordinate system, because its acceleration is toward the left.

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).

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).

Technically no. Negatives are usually associated with displacement, where one direction is considered positive and the opposite is considered negative. Distance is just how far you have travelled.

Ordinary distance is the magnitude of the vector that connects two points. It is always positive or zero (if the two points coincide). Of course in a given coordinate system, you can always move in the negative or negative or negative direction.

If a car moves with a constant speed, can you say that it also moves with a constant velocity? Give an example to support your answer. No, you could be going around a corner at constant speed. Your velocity is then not constant.

Distance is defined to be the magnitude or size of displacement between two positions. Distance traveled is the total length of the path traveled between two positions. Distance traveled is not a vector. It has no direction and, thus, no negative sign.

The negative sign associated with PV work done indicates that the system loses energy. If the volume increases at constant pressure (ΔV > 0), the work done by the system is negative, indicating that a system has lost energy by performing work on its surroundings.

Heat released is negative and heat absorbed is positive. This all goes back to the concept of a system and the surroundings. The system is what we’re focusing on while the surroundings are everything else. We think of change in energy from the perspective of the system.