Forces & Motion

INITIAL THOUGHTS:

1. What is gravity?
   
2. What does balanced & unbalanced forces mean?
   
3. What is the difference between potential & kinetic energy?
   

INDEPENDANT RESEARCH INSTRUCTIONS:
Complete the Forces & Motion Webquery by following this link

forces_and_motion_webquery.docx
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OR Complete this Forces & Motion CER Webquest using the Discovery Education Network link

forces_and_motion_webquest.pptx
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PART 1  Collision

For any pair of interacting objects, the force exerted by the first object on the second object is equal in strength to the force that the second object exerts on the first, but in the opposite direction (Newton’s third law). (MS-PS2-1)
Apply Newton’s Third Law to design a solution to a problem involving the motion of two colliding objects.

Part 3  Relative Motion

All positions of objects and the directions of forces and motions must be described in an arbitrarily chosen reference frame and arbitrarily chosen units of size. In order to share information with other people, these choices must also be shared. (MSPS2-2)

Part 5 Gravity

Gravitational forces are always attractive. There is gravitational force between any two masses, but it’s very small except when one or both of the objects have large mass—e.g., Earth and the Sun. (MS-PS2-4)
Construct and present arguments using evidence to support the claim that gravitational interactions are attractive and depend on the masses of interacting objects.

PART 2  Balanced & Unbalanced

The motion of an object is determined by the sum of the forces acting on it; if the total force on the object is not zero, its motion will change. The greater the mass of the object, the greater force needed to achieve the same change in motion. For any given object, a larger force causes larger change in motion. (MS-PS2-2)
Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object and the mass of the object.

Part 4  Electromagnetic Forces

Electric and magnetic (electromagnetic) forces can be attractive or repulsive, and their sizes depend on the magnitudes of the charges, currents, or magnetic strengths involved and on the distances between the interacting objects.(MS-PS2-3)
Ask questions about data to determine the factors that affect the strength of electric and magnetic forces.

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