Vectors and Scalars


I want to talk about Vectors and Scalars. This is about physics. Now you might be asking, what is a vector? Vectors have a magnitude and direction. In case you don’t know, magnitude is the size of the movement, but it’s not distance. Since it’s a vector quantity, it’s called displacement. 

 For example, the displacement of a leaf being blown by the wind is 50 centimeters to the east. This is a vector quantity because it has a magnitude (50 cm) and a direction (east). And there’s more... 

 If someone asks you the version of speed in a vector quantity, it’s called velocity.  For example, the velocity of a ball being thrown is 5m/s to the east. In other words, five meters per second to the east. 

 You can find the displacement as long as you have the velocity and time. Multiply them and you will get the displacement. If the velocity is 5m/s and the time is 10 seconds, you need to multiply them ( 5 x 10 ) to get the displacement, which is 50 meters. And now, what’s with the rest? Displacement divided by time is velocity, and displacement divided by velocity. 

 Next, I’m going to talk about scalars. What is a scalar? Scalars have a magnitude but no direction. In a scalar, a magnitude is the distance. For a vector it’s displacement and for a scalar it’s distance. The version of speed in a scalar is… well, you know, just speed. And also this is similar, but not the same, to a vector. Speed times time = distance, distance divided by time = speed, and finally distance divided by speed = time. Thank you!

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