Reference Points and Motion

The starting point you choose to describe the location of an object is called the  ____.   A. reference direction  C. reference point D. motion  D. east

• reference direction
• reference point
• motion
• east

A description of an object’s location should include which three things?   A.  speed, direction, and time B.  velocity, distance, and time C.  reference point, speed, and distance D. reference point, distance, and direction

• reference point, distance, direction
• speed, direction, time
• velocity, distance, time
• reference point, speed, distance

. If the reference point changes, which of the following is true?   A.  Distance and direction to an object changes  B.  The position of the object changes C.  Direction to the object changes, but not distance. There is no change

• The position of the object changes
• Direction to the object changes, but not distance
• distance and direction to an object changes
• There is no change

.  Which of the following IS NOT a reference direction? 

• To the north
• faster
• positive motion
• right

.  Which statement indicates that motion has occurred? A.   The reference point has changed. B.  The position of the object has changed. C.  The object being described has changed. D.  Directions change.

• The reference point has changed.
• The position of the object has changed.
• The object being described has changed.
• Directions change.

The ___________ is the difference between an object’s first position and its final position.  A.  reference point  C. direction B.  displacement  D. speed

• speed
• reference point
• direction
• displacement

.  If a cat goes out your front door, stays outside for an hour, and comes back in the front door, which of the following is true?   A.   The displacement of the cat is the total distance it traveled. B.   The displacement of the cat is equal to the distance the cat moved. C.  The displacement of the cat can’t be figured out. D.  The displacement of the cat is 0.

• The displacement of the cat is the total distance it traveled.
• The displacement of the cat is equal to the distance the cat moved.
• The displacement of the cat can't be figured out.
• The displacement of the cat is 0.