# Is defined as a change in position?

Motion, Position, Velocity, And Acceleration. An object's change in position with respect to time is known as its displacement. The velocity of an object is found by taking the derivative of the position function: . Velocity can be thought of as the object's speed and direction, or change in position over time.
A.

### What do you call the change in position?

Speed in a specific direction is called velocity. 17. Acceleration measures change in speed or direction. 18. A change in position over time is called speed.
• #### What occurs when an object changes its position relative to a reference point?

--An object's distance from another object is changing. --An object changes position relative to a reference point. --A place or object used for comparison to determine if an object is in motion. moving the same as an object in motion, then object is not in motion as compared to the reference point.
• #### What happens when two forces act in the same direction on the same object?

False: Forces may work together OR they may be OPPOSITE forces. If opposite forces are balanced, they cancel each other out and do NOT cause a change in the object's motion. When two forces act in the SAME direction on an object, the net force is equal to the _____ of the two forces.
• #### What is required to determine if an object is in motion?

An object is in motion when its distance from another object is changing. A reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point. You assume that the reference point is stationary, or not moving.

Updated: 4th November 2019