# How could it be said that its a scalar quantity its true when consider a certain point only but when considering a certain area it has a direction too?

Here are a few quantities that are in no way associated

with any certain area. These are scalar quantities:

- Temperature
- Cost
- Weight
- Speed
- Kinetic energy
- Magnitude of linear momentum
- Magnitude of force
- Distance

### How do you prove that weight is a vector quantity?

You don't need to prove much - just look at the definition of a vector. A vector includes a magnitude (in this case the force), and a direction. Since weight (or "the force of gravity") is directed to a certain direction, namely downward, you can consider it a vector. You don't need to prove much - just look at the definition of a vector. A vector includes a magnitude (in this case the force), and…

### What quantity describes how quickly you change how fast your going or how quickly you change your direction?

acctually, you are describing two very similar quantities. th quantity that describes how quickly you change your speed, or how fast you are going is your acceleration, measured in distance per unit of time squared. the quantity that describes how quickly you change your direction is called velocity and it is identical to speed except in the fact that velocityshows how fast you go in a certain direction, or how quickly you change your direction

### What is the difference between vector and phasor?

A vector is a physical quantity that has both magnitude and direction (x, y, z; or polar coordinates). A phasor is a mathematical quantity created in electronics to explain AC behavior; it has magnitude and phase (units in degrees or radians). The phase has nothing to do with the angle in polar coordinates. Alternative Answer A phasor is a rotating vector. Whereas a vector represents quantity and direction, a phasor represents quantity and displacement measured…

### What is vector in physics?

A vector is a physical quantity which has not only magnitude, but also a direction. For example: Weight is a vector quantity. Its magnitude is how much a certain body (maybe yours?) weighs due to the pull of Earth's gravity. Its direction is toward Earth's center of mass. Mass is not a vector. It is a scalar quantity. Your mass has no inherent direction. Your weight does once the Earth acts on it. Here is…

### What is lagging and leading current?

Current is a vector quantity with certain magnitude and direction same as Voltage or Potential Difference . So when flows in any circuit, it is in phase or out of phase with applied voltage, if its magnitude and direction is changing before applied voltage then said to be leading current and if after then lagging current.

### How do you achieve negative velocity?

If you have a Displacement - time graph, the velocity at a certain point equals displacement over time, displacement is a vector quantity thus is affected by direction so when it has a negative value the velocity has a negative value. and if your still thinking about it, check out this thought: "negative velocity is positive velocity in the other direction"

### What was the origin of the Big Dipper?

The Big Dipper - or other constellations or parts of them - are simply stars that happen to be in a certain direction. The Big Dipper - or other constellations or parts of them - are simply stars that happen to be in a certain direction. The Big Dipper - or other constellations or parts of them - are simply stars that happen to be in a certain direction. The Big Dipper - or other…

### Why it is taken as negative when an object is thrown upwards against gravitation?

When we throw the object upwards we consider that upward direction as positive. Therefore, the velocity in that direction is positive but the acceleration due to gravity is in the opposite direction and so it is considered negative. But when the ball comes down again after reaching a certain height the velocity is in opposite direction to the earlier one and so the velocity now is negative as a result the acceleration is again negative.

### How is the Conservation of Energy and Conservation of Momentum similar?

In both cases, there is a quantity that doesn't change over time in a closed system - the conserved quantity. Both laws of conservation can help you solve certain problems that might be quite tricky to solve through other means. In both cases, there is a quantity that doesn't change over time in a closed system - the conserved quantity. Both laws of conservation can help you solve certain problems that might be quite tricky…

### What type are the stars in Aries constellation?

A constellation is a group of unrelated stars, that happen to be in a certain direction. So, basically, you will have stars of diverse types. A constellation is a group of unrelated stars, that happen to be in a certain direction. So, basically, you will have stars of diverse types. A constellation is a group of unrelated stars, that happen to be in a certain direction. So, basically, you will have stars of diverse types…

### How can average velocity be zero if traveled 100m?

This question revolves around the idea of vector quantities. Vector quantities involve two factors: magnitude and direction. Velocity (as well as average velocity) is a vector quantity. The given value of 100m is a magnitude of a distance which is a scalar quantity. Average velocity can be represented as below (all V's represent velocity, not speed). Vavg = ½ (Vi + Vf ). Let us say that an object was traveling at an initial velocity…

### Why work is not a vector quantity?

Intuitively, work is basically equivalent to energy - and energy doesn't have an assigned direction. For example, one type of energy is heat - an object can have more or less heat energy, but assigning a direction to that doesn't make sense (even though energy can FLOW in a certain direction, but that's really a different topic). Mathematically, work is defined as the dot product of a force and a distance (both of which are…