Question

what is velocity?
explain it.​

Answer 1

Answer:

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. ... Velocity is a physical vector quantity; both magnitude and direction are needed to define it.

Explanation:

hope it helps you

Answer 2

Answer:

The meaning of velocity of an object can be defined as the rate of change of the object's position with respect to a frame of reference and time.

It is a vector quantity, which means we need both magnitude (speed) and direction to define velocity. The SI unit of it is meter per second (ms-1).

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Unit of velocity

Common symbols: v, v, v⃗

SI unit : m/s

Other units: mph, ft/s

Dimension: LT−1

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☞Example to understand it in a better way

Q: Jewel goes to school in her dad’s car every morning. Her school is 8 km from her home, and she takes 15 mins to travel, but when she looks at the speedometer on the dashboard of the car, it shows a different reading all the time. So, now how would she know her velocity?

A: Well, the average velocity of Jewel’s car could be found by:

For convenience, we have considered the car to move in a straight line, and we will convert all the units of time to hours.

Therefore, 15 mins = 1560 = 0.25 hours.

Average velocity, v = △x△t

v = 8 km/0.25 hrs

v = 32 km/h

Now we see that even though the car may vary its speed, if it covers the same amount of distance in the same amount of time, every time its average velocity will remain the same.

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Thnku!!!