direction displacement and units
To describe an object's motion, you need to know its speed, direction, and position at any given time. These three pieces of information can help create a complete picture of how the object is moving.
direction displacement and units
Speed and direction of motion.
Period
Yes, a frame of reference is necessary to accurately describe motion. This is because motion is relative and depends on the observer's point of view. By defining a frame of reference, we establish a standard from which to measure and describe the motion of objects.
Period
To fully describe velocity, you need both the speed (magnitude) and the direction of motion. Speed, on the other hand, only requires the magnitude of the motion, regardless of direction.
Speed is considered an incomplete quantity to describe motion because it only gives information about how fast an object is moving, but does not provide any information about the direction of motion. Velocity, on the other hand, is a complete quantity as it includes both speed and direction.
It doesn't tell anything about the direction of the motion. If I give you complete details of my speed at every instant during the hour after I leave the house in the morning, you still can't tell how far I am from home at the end of the hour.
Describe the three types of plate motion and the faults that are characteristic of each type of motion.
The term used to describe motion is "kinematics." Kinematics is the branch of mechanics that deals with the motion of objects without considering the forces that cause the motion.
The two factors that describe motion are thing. :)