You are watching: Which quantity has both a magnitude and a direction
What is a scalar?A scalar is a amount that is totally described by a size only. It is explained by just a single number. Some examples of scalar quantities encompass speed, volume, mass, temperature, power, energy, and also time.What is a vector?A vector is a amount that has both a magnitude and a direction. Vector quantities are necessary in the research of motion. Some examples of vector quantities encompass force, velocity, acceleration, displacement, and also momentum.What is the difference between a scalar and vector?A vector quantity has a direction and also a magnitude, while a scalar has only a magnitude. You can tell if a quantity is a vector by even if it is or no it has a direction associated with it.Example:Speed is a scalar quantity, but velocity is a vector that specifies both a direction and also a magnitude. The speed is the size of the velocity. A vehicle has a velocity the 40 mph east. It has a rate of 40 mph.
How to draw a VectorA vector is attracted as an arrow with a head and a tail. The magnitude of the vector is often described by the length of the arrow. The arrowhead points in the direction that the vector. See the snapshot above.
How to write a VectorVectors are normally written together boldface letters. They can additionally be written with an arrowhead over the top of the letter.Example questions: Is that a scalar or a vector?1) The football player was to run 10 miles an hour towards the finish zone.This is a vector due to the fact that it to represent a size (10 mph) and a direction (towards the end zone). This vector represents the velocity that the soccer player.2) The volume the that crate at the west next of the building is 14 cubic feet.This is a scalar. It might be a little tricky as it offers the location of package at the west next of the building, yet this has nothing to carry out with the direction that the volume which has actually a size of 14 cubic feet.3) The temperature of the room to be 15 levels Celsius.This is a scalar, over there is no direction.4) The car increased north in ~ a rate of 4 meter per second squared.This is a vector together it has both direction and magnitude. We additionally know the acceleration is a vector quantity.Interesting Facts about Scalars and VectorsUnit vectors space vectors with a magnitude of 1. Castle are offered to specify direction.The credit transaction for inventing vectors is usually provided to ireland physicist wilhelm Rowan Hamilton.Vectors and also scalars are necessary in numerous fields the math and also science.Vectors deserve to be characterized in two dimensional or 3 dimensional space.Vector graphic are occasionally used in computers due to the fact that they have the right to be scaled come a larger size there is no losing any image quality.
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