What is a vector?
In everyday life, we measure things. For example, what is the size of something, what is the volume (how many liters) of the water bottle. When we buy things from shops, we ask 100 grams or 1 Kg etc. Assume that we need sugar. We will use just a number for example 2 Kg. But, there are some quantities which need not only a number but direction also. For example, if we ask where is this building, we may get a response like this: Go straight in this street. At the end, turn left and then first right. There you can find that building. Look at this explanation. Here, the location (length of the distance is hidden) includes right and left. These are the directions.
This is in everyday life. In physics, there are so many such quantities which need direction as well as some number. These are called vectors. There are quantities for which just a number is enough to denote them. Those are called scalars. Now what are the vector quantities?
In everyday life, we measure things. For example, what is the size of something, what is the volume (how many liters) of the water bottle. When we buy things from shops, we ask 100 grams or 1 Kg etc. Assume that we need sugar. We will use just a number for example 2 Kg. But, there are some quantities which need not only a number but direction also. For example, if we ask where is this building, we may get a response like this: Go straight in this street. At the end, turn left and then first right. There you can find that building. Look at this explanation. Here, the location (length of the distance is hidden) includes right and left. These are the directions.
This is in everyday life. In physics, there are so many such quantities which need direction as well as some number. These are called vectors. There are quantities for which just a number is enough to denote them. Those are called scalars. Now what are the vector quantities?
- velocity
- momentum
- angular momentum
- acceleration
- force
- torque
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