Guiding Questions

1. (6.8b) How can we use forces to understand the motion of an object?

(I can identify and describe the changes in position, direction and speed of an object when acted upon by unbalanced forces.)


2. (6.8c) How can we calculate average speed using distance and time measurements?

(I can calculate average speed using distance and time measurements.)


3. (6.8d) How do we measure and graph changes in motion?

(I can measure and graph changes in motion.)


5. How do force and energy interact?

(I can identify and describe the changes in position, direction and speed of an object when acted upon by unbalanced forces.)

6. How can we use forces to understand the motion of objects?

(I can identify and describe the changes in position, direction and speed of an object when acted upon by unbalanced forces.)

7. Why do we use inclined planes and pulleys?

(I can identify and describe the changes in position, direction and speed of an object when acted upon by unbalanced forces.)


Vocabulary


QUANTITATIVE VS. QUALITATIVE DATA - (See Link)

NEWTON'S THREE LAWS OF MOTION - & more information about Isaac Newton:
  • 1st Law of Motion: states that an object in motion, stays in motion, while an object at rest, stays at rest.



  • 2nd Law of Motion: The acceleration of an object is produced by the net force, and applied force is directly related to the magnitude of the force



  • 3rd Law of Motion: For every action force, there is an equal and opposite reaction force


RESTING POSITION - Refers to an object remaining in the same spot relative to another object.

MOTION - The change in an object's position with respect to time and in comparison with the position of other objects used as reference points.

DIRECTION - The path that an object is moving or facing.

SPEED - The rate of change of position (or distance traveled) with respect to time; units in which speed is measured are expressed as distance per time (example: meters per second).

INITIAL SPEED - the speed of an object at the beginning of a measurement, an intial condition.

FINAL SPEED - the speed of an object at the end of a measurement, a final condition.

VELOCITY - the speed of something in a given direction.

ACCELERATION - increase in the rate or speed of something.

DISTANCE - The amount of space between two things or people.

DISTANCE - TIME GRAPH - This type of line graph illustrates changes in motion. Time is graphed on the x-axis and distance is graphed on the y-axis.

DISPLACEMENT - The moving of something from its place or resting position

AVERAGE SPEED - Average speed is calculated by dividing the total distance an object traveled by the total time it took the object to travel the distance (s= d/t).Speed describes the rate of movement.

INERTIA - The resistance of any physical object to any change in its state of motion, including changes to its speed and direction. It is the tendency of objects to keep moving in a straight line at constant velocity.

REFERENCE POINT - A point used to find or describe the location of something.

NEWTON - Unit of measurement for forces, measured using a spring scale.

FORCE - A push or pull that can change the motion of an object, measured with a spring scale in Newton (N) units.

UNBALANCED FORCE - Forces on an object that cause change in the motion of the object.

BALANCED FORCE - Forces on an object that do not change the motion of the object.

NET FORCE - The sum of all the forces acting on an object. The equation below is the sum of N forces acting on an object.

TIME-POSITION GRAPHS - A line graph that shows either constant velocity and changing velocity (acceleration)

WEBSURFING SCIENCE: FORCE & MOTION 6.8BCD:

Part One:

Part Two:

Part Three:


WEB RESOURCE:
Hockey - Force and Newtons 3 Laws
Calculate Speed!
Calculating Average Speed Lesson
Graphing Speed - Distance over Time