Question

difference between speed and velocity ?when is a body said to have uniform velocity? how can we describe the position of an object illustrate with suitable example

Answer 1

Hey mate here's your answer...

1) It is defined as the rate of change of distance.

1) It is defined as the rate of change of displacement.

2) It is a scalar quantity.

2) It is a vector quantity.

3) It can never be negative or zero.

3) It can be negative,zero or posituve.

4) Speed is velocity without direction.

4) Velocity is directed speed.

5) Speed may or may not be equal to velocity.

5) A body may possess different velocities but the same speed.

6) Speed never decreases with time. For a moving body, it is never zero.

6) Velocity can decrease with time. For a moving body , it can be zero.

7) Speed in SI is measured in ms-1.

7) Velocity in SI, is measured in ms-1.

If a body is  travelling on a straight path with constant speed we say that  body  have uniform velocity.

We can describe the position of an object just by using the refference point which is also known as the orgin. take the example of vinnie's home is x km from the central park. Here the central park is being used as the refference point or as the orgin.

Hope it helps☺

Regard
@Yusuf..

Answer 2

Difference Between Speed And Velocity

What's the difference between speed and velocity?

This is a great question and I can see your confusion. There are similarities, but there are also differences. I will give you a definition of each and then provide an example.

Speed refers to how fast an object is moving. It is calculated by the displacement of space per a unit of time.

Velocity refer to the rate at which an object changes position in a certain direction. It is calculated by the displacement of space per a unit of time in a certain direction.

These definition might sound the same, but there is a crucial difference. It deals with direction. Velocity deals with direction and speed does not. Let me give you an example.

If you were driving at 50 miles per hour to get to a store, you would say that your speed is 50 miles per hours. If you were driving in a circle and ended at the same place, you would say that your velocity is zero, because there was no directional gain. The key to remember is that velocity is a vector, which means there is a directional component.
I hope it will help u
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