Velocity is the rate of change of position of an object w.r.t a frame of reference.
In simple words, it is defined as the rate at which an object changes its position. If an object is changing its position, then an object has velocity.
Here are some examples of velocity in everyday life:
- #1 Velocity of a bullet released from the toy gun
- #2 Velocity of a train running on the rail track
- #3 Velocity of a satellite revolving around the earth
- #4 Velocity of water flowing in the river
- #5 Velocity of a tire rolling on the land
- #6 Velocity of a car running on the road
- #7 Velocity of a girl running on the ground
- #8 Velocity of a ball hit by the batsman
- #9 Velocity of water falling from the waterfall
- #10 Velocity of a moon revolving around the earth
- #11 Velocity of the earth revolving around the sun
- #12 Velocity of a tractor moving in the farm
- #13 Velocity of a stone thrown in the sea
- #14 Velocity of an airplane flying in the sky
- #15 Velocity of an asteroid floating in space
Let’s one by one discuss the above examples in detail.
#1 Velocity of a bullet released from the toy gun
Consider that a bullet released from the toy gun moves eastwards with a speed of 1 meter per second. Since a bullet is changing its position, it is right to say that a bullet has a velocity of 1 meter per second eastwards.
#2 Velocity of a train running on the rail track
If a train is running on the rail track towards the north with a speed of 1 kilometer per hour, then a train has a velocity of 1 kilometer per hour north. It is not true to say that a train has a velocity of 1 kilometer per hour (because velocity is a measurement of both speed and direction).
#3 Velocity of a satellite revolving around the earth
A satellite revolving around the earth has a velocity of about 8 kilometers per second.
#4 Velocity of water flowing in the river
When a flood comes in the river, a news channel shows the headline something like water is flowing at 2 meters per second speed. But to indicate the velocity of water, it is necessary to mention a specific direction like water is flowing at 2 meters per second towards the south.
#5 Velocity of a tire rolling on the land
One tire is rolling on the land towards the north with a speed of 0.5 meters per second. If you have to tell the velocity of a tire, then it is right to say that its velocity is 0.5 meters per second eastwards because velocity is a vector quantity, and it has both speed and direction.
#6 Velocity of a car running on the road
Suppose that one car runs on the road towards the west with 2 kilometers per hour speed. Since a car has both speed and direction and its position is also changing, a car velocity is 2 kilometers per hour towards the west.
#7 Velocity of a girl running on the ground
One girl is running on the ground at a speed of 1 meter per second. To indicate the velocity of a girl, one must specify the direction in which she is moving. For example, a girl is moving at 1 meter per second north.
#8 Velocity of a ball hit by the batsman
Let assume that while playing cricket, a ball hit by the batsman moves with a 5 meters per second speed. Now, this is just the speed of the ball since a ball has no direction. But while saying the velocity of a ball, it is necessary to mention the direction of a ball. For example, a ball velocity is 5 meters per second towards the east.
#9 Velocity of water falling from the waterfall
It is wrong to say that water falling from the waterfall has a velocity of 5 meters per second. But if the direction of water is mentioned (like water is falling at 5 meters per second downwards), then it is the velocity of the water.
#10 Velocity of a moon revolving around the earth
A moon revolving around the earth has a velocity of about 1 kilometer per second.
#11 Velocity of the earth revolving around the sun
Earth revolving around the sun has a velocity of about 30 kilometers per second.
#12 Velocity of a tractor moving in the farm
A tractor moves in the farm at 2 meters per second speed towards the east. Therefore, a tractor has a velocity of 2 meters per second eastwards because the position of a tractor is changing.
#13 Velocity of a stone thrown in the sea
As per the definition of velocity, an object has a velocity (if an object changes its position). The image shows that a stone thrown by a kid moves forward in the east with a speed of 2 meters per second.
Here an object (i.e., stone) is changing its position, and also it has both speed and direction. So the velocity of a stone is 2 meters per second eastwards.
#14 Velocity of an airplane flying in the sky
How will you describe the velocity of an airplane, which is heading towards the north with 100 kilometers per hour speed? It is not enough to say that: airplane velocity is 100 kilometers per hour. But, it is also necessary to mention the direction. For example, airplane velocity is 100 kilometers per hour towards the north.
#15 Velocity of an asteroid floating in space
An asteroid floating in space has a velocity of about 20 kilometers per second.
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Related:
- Air Resistance Examples
- Gravity Examples
- Inertia Examples
- Acceleration Examples
- Momentum Examples
- Mass Examples
- Friction Examples
- Frame of Reference Examples
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