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2013-10-23 23:57:09
2013-10-23 23:57:09

is moves with a constant velocity in the positive direction......


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Positive Velocity is moves with a constant velocity in the positive direction: I Love you guys

The velocity has to increase in a positive direction. The increase in velocity in a positive direction is a positive acceleration.

Concave up. "Acceleration is increasing with time" tells us that the derivative of acceleration is positive. Since acceleration is the derivative of velocity, this means that the second derivative of velocity is positive. By definition, having a non-negative second derivative means that velocity is concave up.

That is its definition, to put it simply. Velocity is a vector quantity, meaning it has a direction, and thus when you add, subtract, multiply or divide velocities, you must take into account whether they are positive or negative.

no a body can only have positive velocity .sometimes it have negative acceleration

Positive accelerating is when velocity increases. Velocity increases when speed in a certain direction increases.

Yes. An object slowing down but still moving in a positive direction has a positive velocity but a negative acceleration.

Because that is the definition of velocity

Well velocity is basically the same thing as speed but with direction (velocity can be negative or positive and speed is always positive). l velocity l = speed So a change in velocity means a change in speed.

No. The definition of 'acceleratiion' is 'any change in velocity'.

An object with constant velocity has no acceleration.

Zero, by definition. "Terminal velocity" implies that the velocity no longer changes.

Take the velocity to be in positive direction. Positive acceleration increases velocity and they are in the same direction. Negative acceleration reduce velocity and they are in opposite direction. It does not matter if the motion in linear or anfular.

The kinetic energy of a system can never be negative.Lets look at the definition of kinetic energy:KE = 1/2mv2Mass can never be negative.Velocity can be negative but squaring a positive or a negative equals a positive.And so...1/2 x positive x positive = positive

No, velocity is by definition just a rate of movement that is a scalar quantity.

No. The definition of acceleration is change in velocity.

Average velocity is the distance traveled divided by the time it takes to travel that distance. Average velocity is also called "velocity".

A positive acceleration is a change in velocity such that the latter velocity is greater than the former velocity and is therefore going fasterwhile a negative acceleration or deceleration is a change in velocity such that the latter velocity is lesser than the former velocity and is therefore going slower.Now let us look at the equation of a uniform acceleration (the change in velocity is uniform):a = (vf-vi)/sIf the final velocity is greater, you will have a positive acceleration. If the initial velocity is greater, you will have a deceleration.

average velocity means change in displacement and time interval ratio is called as average velocity average velocity what is the velocity at particular instant of time

Positive and negative velocities are simply velocities in opposite directions.Before you start working on the situation, you definewhich direction you'regoing to call positive. Anything you find moving the other way has negativevelocity.

Velocity can only be measured in relation to some specified point of rest, so there is no such thing as absolute velocity. All velocity is relative.

Rate of change of velocity.i think you mean 'acceleration'anyway here's the definition--noun1.the act of accelerating; increase of speed or velocity.2.a change in velocity.3.Mechanics . the time rate of change of velocity with respect to magnitude or direction; the derivative of velocity with respect to time.

In physics, velocity is the measurement of the rate and direction of change in the position of an object.

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