5 Common Reference Directions Used to Describe Motion

The speed and direction of an objects motion. Displacement is the direction from the starting point and the length of a straight line from the starting point.

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Distance is the length of the path between two points.

. A blank is a starting point you choose to describe the location or position of an object. We can now apply these concepts to describing motion in two dimensions. Choose a reference point specify reference directions determine the distance along each reference direction.

Rectilinear Motion The path of the motion is a straight line. Have your partner begin bouncing the basketball while standing in place. Use measuring devices and stopwatches to measure distance and time.

Use positive and negative numbers to represent quantities in real-world contexts explaining the meaning of 0. DESCRIBING MOTION 0 x speed distance traveledtime x2 x1t2 t1 xt Our goal is to learn what causes motion. To describe motion accurately a frame of reference is necessary.

A point used to find or describe the location of something. The starting point used to describe the motion or position of an object is called the reference point. Consider a particle P and reference frames S and S S as shown in Figure.

Describe the balls motion. The first step is to develop a way to describe motion. Total length of path traveled.

Constant direction is a straight line so constant velocity means motion in a straight line at constant speed. 10kmhr upstream - 5 kmhr downstream 5kmhr upstream subtract due to opposite direction 10kmhr downstream 5kmhr downstream 15kmhr downstream add due to same directions In ____ motion the velocity is continuously changing because direction is. 6NSC5 Understand that positive and negative numbers are used together to describe quantities having opposite directions or values.

For direction of motion we used the Cardinal Directions N E S W. 4 Linear Motion Constant Velocity Constant speed means steady speed. You will remain stationary.

Non moving objects on the Earths surface are often used as reference points for local motion. The distance between your final position and your starting position is displacement. Again have your partner walk forward with the bouncing ball.

A complete description of motion includes an reference point your displacement and your direction. Set up races between objects and document the results. Look for pictures that depict motion in interesting ways.

In addition to the terms we can fix numbers to the terms. Distance an object moves divided by the time it took to move that distance. In the second law of motion it is Mass X Acceleration.

How are distance and displacement different. Make and fly paper airplanes to explore and describe motion. A reference point is needed to determine the position of an object.

A few examples of linear motion are the motion of the train football the motion of a car on the road etc. Sometimes you need to describe how an objects position. Something with constant speed doesnt speed up or slow down.

Every day situations use terms like start finish position location distance speed velocity and acceleration. Distance is the total length of your path of motion. After we have that in place we will ask what causes the motion we have learned how to describe.

When you describe a position using two directions you are using. Curvilinear Motion The path of the motion is curved. Constant velocity means both constant speed and constant direction.

Describe the motion of the ball. What can you use to compare the motion of two different objects. Examples of blank directions in two dimensions include north and east and right and forward.

Blank is the length of the path an object moves along. Rotatory motion is the motion that occurs when a body rotates on its own axis. Know that motion has taken place.

Motion and Position Motion occurs when an object changes its position relative to a reference point. The position of the origin of S S as measured in S is r S. When a plaintiff prosecutor or defendant asks the court or judge to rule on a specific issue that request is known as a motion.

The idea for the Describing Words engine came when I was building the engine for Related Words its like a thesaurus but gives you a much broader set of related words rather than just synonyms. Use drawings to document observations and discoveries about motion. The starting point used to describe the position of an object.

The motion of an object depends on the reference point that is chosen. What is needed to describe motion. Legal motions are one of the most common facets of the American justice system and they ensure that controversial or disputed.

The ability to apply a change in velocity on a given object. The numbers are related to some defined number line called a coordinate axis. While playing around with word vectors and the HasProperty API of conceptnet I had a bit of fun trying to get the adjectives which commonly describe a word.

When an object is falling under the sole influence of gravity. Next have your partner again bounce the ball but this time your partner should walk forward with the bouncing ball. The distance an object moves in a unit of time.

The process of changing positions. For a court to take most actions on an issue that is in dispute either party in a case must ask the court to decide on that issue. Distance between initial and final position.

For maps we use latitude and longitude coordinates to describe a reference point. We will do this by breaking the problem into two parts. Terms in this set 11 What is needed to describe motion completely.

S r S S the position of P as measured in S S is r P S. The difference between the initial or starting position and the final position.

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