Motion is a change in position over time.
DRY MIX dependent/responding Y-axis;
manipulated/independent X-axis
3. An object with more mass will need a
greater force to change its speed or direction.
Potential energy=energy of position
Kinetic energy=energy of motion
Mechanical energy is the sum of both
5. For an object to change its motion, a
push/pull (force) must be applied over a distance.
6. The first Law of Motion is: objects in motion
stay in motion unless forced to change.
7. Second law of motion is:
force equals mass times acceleration.
8. Third law of motion is: for every action,
there is an equal and opposite reaction.
9. When forces are balanced, there is no
motion. Unbalanced force is needed for motion
to occur.
10. An object is in motion when---its position
changes in relation to a reference point.
11. Pulleys and inclined planes can reduce the
amount of force needed to move an object. A
Newton is the measurement unit of force.
12. SPEED is a change in position over a
period of time. The formula for speed is
distance/time and is measured in units like
miles/hour, or meters/second. Velocity is speed &
13. Position-precisely where an object is
located. Speed- how fast an object is moving.
14. Average speed is found by dividing the total
distance traveled by the amount of time.
Average speed = total distance / total time.
15. Acceleration occurs when you increase
speed, decrease speed, or change direction.
16. Constant speed is drawn on a graph with a
diagonal, straight line. A flat (horizontal) straight
shows that the object is not moving.
17. On a motion graph, speed is shown by the
steepness of the line; steeper is faster.
18. Forces can act between objects in direct
contact or they act over a distance.
19. Friction is the force between 2 objects when
they rub together. Friction is an unbalanced force.
20. Balanced forces don't allow change
(same speed, same direction, or same position).