Fill in the Blanks 1 - Changes in MotionOnline version Chapter 11, Lesson 2: "Changes in Motion". Use your textbook to help you fill in the blanks (click on the words) pages 604 - 611. by Naneth Burquez 1 weight conservation mass momentum 3rd law weightlessness law harder increases motion decreases motion 2nd momentum 1 . - I am the state of being when there is no net force of gravity . What am I ? 2 . - I am the principle that states that total momentum does not change when objects collide . What am I ? of 3 . According to me , acceleration depends on an object ? s mass and the amount of net force applied to it . What am I ? of 4 . I am the combination of the mass and the speed of an object . What am I ? 5 . I state that for every action force , there is an equal and opposite reaction force . What am I ? of 6 . I am caused by the force of gravity pulling down on an object . What am I ? 7 . I am the amount of matter in an object . What am I ? 8 . If two balls are moving at the same speed , the ball with greater mass will be to stop . 9 . If the force increases , then the acceleration ; if the mass increases , then the acceleration .