MOTION THIS IS VOCABULARY PRACTICE FOR 'MOTION'. YOU CAN FIND THE ANSWERS IN YOUR NOTES OR IN CHAPTER 1 OF YOUR SMALL BLUE TEXTBOOK. Tools A B MOTION A CHANGE IN POSITION FRAME OF REFERENCE BACKGROUND OR POINT THAT IS ASSUMED TO BE STATIONARY AND IS USED FOR COMPARIOSON AGAINST A MOVING OBJECT SPEED RATE AT WHICH AN OBJECT MOVES CONSTANT SPEED SPEED THAT DOES NOT CHANGE SPEED= DISTANCE/TIME VELOCITY SPEED IN A GIVEN DIRECTION ACCELERATION RATE OF CHANGE IN VELOCITY NEGATIVE ACCELERATION DECELERATION ACCELERATION= FINAL VELOCITY-ORIGINAL VELOCITY/TIME MOMENTUM DETERMINES HOW DIFFICULT A MOVING OBJECT IS TO STOP MOMENTUM= MASS x VELOCITY CONSERVATION OF MOMENTUM THE TOTAL MOMENTUM OF ANY GROUP OF OBJECTS REMAINS THE SAME UNLESS OUTSIDE FORCES ACT ON IT