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# Motion(position and velocity)

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### Motion(position and velocity)

1. 1. By iTutor.com T- 1-855-694-8886Email- info@iTutor.com
2. 2. Motion  Motion is some kind of a change in the position of an object with time.Fling Bird Moving train Fling plane  You might have noticed that the bird is not at the same place after some time, while the table is at the same place.  On this basis you may have decided whether an object is at rest or in motion.
3. 3. The position variable Motion is about knowing where things are and how they move. To understand where things are, we need to understand position. Position is a variable and it is always relative to an origin, or the place where the object’s starting point was zero.
4. 4. Forward and backward Position and distance are similar but not the same. Both use units of length. Distance can have only positive values. Position uses positive and negative numbers. Positive numbers are for positions to the right (in front) of the origin. Negative numbers are for positions to the left (or behind) the origin.
5. 5. Forward and backward Many variables can be positive or negative. These include position, speed, and force. These variables are called vectors because they can have a value and a direction. We use the term velocity to mean speed with direction.
6. 6. Types of Motion Rectilinear motion:  The objects move along a straight line is called the rectilinear motion.  Example: motion of a vehicle on a straight road, march-past of soldiers in a parade.
7. 7.  Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path or a circular orbit.  Example : The motion of a point marked on the blade of an electric fan or the hands of a clock are examples of circular motion.Copyright reserved. 2012 The E Tutor
8. 8.  Periodic motion:  An object repeats its motion after some time.  Motion of a pendulum, a branch of a tree moving to and fro, motion of a child on a swing, strings of a guitar or the surface of drums being played, are all examples of periodic motion
9. 9. Velocity The change in position is the velocity multiplied by the time.
10. 10. Call us for more information:1-855-694-8886 www.iTutor.com The End