Question

Heya !!!




difference between speed and velocity

Answer 1

ANSWER

They are completely different . Firstly you should have knowledge of distance and displacement.

Distance -

It is actual distance between initial and final points.

Displacement -

It is shortest distance between two initial and final points.

Distance is scalar quantity while displacemement is vector .

Now ,

What is scalar and vector ?

Scalar quantity is that which has only magnitude .

While ,

Vector quantity is that which has both magnitude and direction.

Sometimes distance and displacement are equal when an object is travelling in straight line jn same direction.

NOW COME TO YOUR QUESTION

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SPEED -

It is defined as the distance per unit time .

It is a scalar quantity.

Its unit is m/s

It can not be negative

VELOCITY -

It is defined as the displacement per unit time .

Its unit is m/s

It can be zero and negative .

NOW SEE ,

HERE VELOCITY IS NEGATIVE

see ATTACHMENT

A body moves 2m in south in relation to north displacement =-2 m. Let the object take 1 sec to cover the distance So velocity is also -2 m/s .

So velocity can be negative but not speed .

Answer 2

Answer:

SPEED:

1. The rate at which an object covers a certain distance is known as speed.
2. Scalar quantity
3. Speed can never be negative or zero.
4. The average speed will continue to count even if the object change direction.
5. Speed never decreases with time. For a moving object, it is never 0.

VELOCITY:

1. Velocity can be defined as the rate at which an object changes position in a certain direction.
2. Vector quantity
3. Velocity can be zero, negative, or positive.
4. The velocity of the object changes with the change in direction, therefore the object must follow one direction.
5. Velocity can decrease with time. For a moving object, it can be 0.