what is the difference between velocity & speed?

Answer 1

(m)

In physics, speed is defined as the rate of increase (or decrease) of distance travelled, with time. Linear velocity is the rate of increase (or decrease) of distance traversed by a body in a particular direction. Speed is defined with the omission of reference to direction. Thus, velocity is a vector quantity and speed is a scalar one.

Answer 2

Difference Between Velocity And Speed

Answer 3

Velocity (symbol: v) is a vector measurement of the rate and direction of motion. The scalar absolute value (magnitude) of velocity is speed. Velocity can also be defined as rate of change of displacement or just as the rate of displacement, depending on how the term displacement is used. It is thus a vector quantity with dimension length/time. In SI units this is metre per second
Speed is a measurement of how fast an object is moving. Fast-moving objects can cover large distances in a small amount of time. They are said to have a high speed. A roller coaster car moving at 60 miles per hour would be able to cover a distance of 60 miles in one hour if it could maintain this pace.

Answer 4

speed and velocity are actully the same with a minor difference
SPEEDof a body is the distance travelled per unit time and gives an idea of how fast a body is moving.
also speed has nomagnitude only,no specified directions, and is therefore a scaler quantity.
speed=distance\time
SI units-m/s
speed gives the idea of how fast a body is moving but not the direction.in order to know the exact position of a moving car VELOCITY is used
velocity is the distance travelled by a body per unit time in a specific direction.
velocity=distance travelled in a given direction\time taken.
SI units-m/s
velocity is associated with both magnitude and direction and is hence a vector quantity.

Answer 5

Just as distance and displacement have distinctly different meanings (despite their similarities), so do speed and velocity. Speed is a scalar quantity which refers to "how fast an object is moving." A fast-moving object has a high speed while a slow-moving object has a low speed. An object with no movement at all has a zero speed.
Velocity is a vector quantity which refers to "the rate at which an object changes its position." Imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. While this might result in a frenzy of activity, it would result in a zero velocity. Because the person always returns to the original position, the motion would never result in a change in position. Since velocity is defined as the rate at which the position changes, this motion results in zero velocity. If a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. Every step must go into moving that person further from where he/she started. For certain, the person should never change directions and begin to return to where he/she started from.

Answer 6

Try this explanation.
Speed and Velocity
Just as distance and displacement have distinctly different meanings (despite their similarities), so do speed and velocity. Speed is a scalar quantity which refers to "how fast an object is moving." A fast-moving object has a high speed while a slow-moving object has a low speed. An object with no movement at all has a zero speed.

Velocity is a vector quantity which refers to "the rate at which an object changes its position." Imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. While this might result in a frenzy of activity, it would result in a zero velocity. Because the person always returns to the original position, the motion would never result in a change in position. Since velocity is defined as the rate at which the position changes, this motion results in zero velocity. If a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. Every step must go into moving that person further from where he/she started. For certain, the person should never change directions and begin to return to where he/she started from.

Velocity is a vector quantity. As such, velocity is "direction-aware." When evaluating the velocity of an object, one must keep track of direction. It would not be enough to say that an object has a velocity of 55 mi/hr. One must include direction information in order to fully describe the velocity of the object. For instance, you must describe an object's velocity as being 55 mi/hr, east. This is one of the essential differences between speed and velocity. Speed is a scalar and does not keep track of direction; velocity is a vector and is direction-aware.

The task of describing the direction of the velocity vector is easy! The direction of the velocity vector is simply the same as the direction which an object is moving. It would not matter whether the object is speeding up or slowing down, if the object is moving rightwards, then its velocity is described as being rightwards. If an object is moving downwards, then its velocity is described as being downwards. So an airplane moving towards the west with a speed of 300 mi/hr has a velocity of 300 mi/hr, west. Note that speed has no direction (it is a scalar) and velocity is simply the speed with a direction.

As an object moves, it often undergoes changes in speed. For example, during an average trip to school, there are many changes in speed. Rather than the speed-o-meter maintaining a steady reading, the needle constantly moves up and down to reflect the stopping and starting and the accelerating and decelerating. One instant, the car may be moving at 50 mi/hr and another instant, it might be stopped (i.e., 0 mi/hr). Yet during the course of the trip to school the person might average 25 mi/hr.

Answer 7

well,
Velocity is...
Rapidity or speed of motion; swiftness.
The rate of speed of action or occurrence.
The rate at which money changes hands in an economy.
while.
Speed is...
The rate or a measure of the rate of motion, especially:
Distance traveled divided by the time of travel.
The limit of this quotient as the time of travel becomes vanishingly small; the first derivative of distance with respect to time.
The magnitude of a velocity.
Swiftness of action.
The act of moving rapidly.
The state of being in rapid motion; rapidity.
A transmission gear or set of gears in a motor vehicle.
A numerical expression of the sensitivity of a photographic film, plate, or paper to light.
The capacity of a lens to accumulate light at an appropriate aperture.
The length of time required or permitted for a camera shutter to open and admit light.

Answer 8

Speed is the magnitude of Velocity.

Answer 9

It's simple PHYSICS,

SPEED- It is the distance moved by an object per unit time.

but, VELOCITY- It is the speed an object takes up, in any direction.

Answer 10

The difference between speed and velocity is that velocity is speed with a direction vector associated with it. It's that direction vector that makes them different.

Speed is displacement (distance traveled) per unit time. Velocity is displacement (distance traveled) per unit time in a given direction. The "directionality" associated with velocity makes it a vector quantity, while speed is a scalar quantity.

The main difference between them in everyday life is that "speed" is usually used
properly, but "velocity" is usually used Improperly.

-- "30 miles per hour" is a speed

-- "30 miles per hour north" is a velocity

-- "30 miles per hour north" and "30 miles per hour west" are the same speed but different velocities.

https://www.electrikals.com

Answer 11

in common terms, speed and velocity are the same..
the rate at which a certain body was moving,,
scientifically,
speed refers only to the rate at which a certain body travels from one place to another, period. but,
velocity is the speed of a certain body from one point to another at any given direction.