Name: __________________________________________Period: _______________ Date: ___________________

Multiple Interactions and MotionFor each situation:

Create a system schema in the middle box. Use the system schema to create a force diagram. Remember to label your force vectors and indicate the relative strength of the force with how

long the vector is drawn. Write a Net force equation for horizontal and vertical forces.

1. A cup sitting motionless on a table.

System Schema: Force Diagram:

Net Force:FNet,x =

FNet,y =

3. A cat sitting motionless on a rug.

System Schema: Force Diagram:

Net Force:FNet,x =

FNet,y =

©Modeling 2014 Adepted from Workshop Project 2006/STL Group-J. Bartin, R. Rice, D. Rice Unit - Multiple Interaction, v1.1

4. A skater gliding on one foot at a constant velocity on frictionless ice.

System Schema: Force Diagram:

Net Force:FNet,x =

FNet,y =

6. A chandelier that is suspended from the ceiling by a chain.

System Schema: Force Diagram:

Net Force:FNet,x =

FNet,y =

©Modeling 2014 Adepted from Workshop Project 2006/STL Group-J. Bartin, R. Rice, D. Rice Unit - Multiple Interaction, v1.1

8. Draw a force diagram for the bucket of water that is being raised from the well at a constant velocity.

System Schema: Force Diagram:

Net Force:FNet,x =

FNet,y =

10. A skydiver who has just left the plane and is accelerating toward the ground.

System Schema: Force Diagram:

Net Force:FNet,x =

FNet,y =

©Modeling 2014 Adepted from Workshop Project 2006/STL Group-J. Bartin, R. Rice, D. Rice Unit - Multiple Interaction, v1.1

12. The same skydiver with his parachute released who is now descending at a constant velocity.

System Schema: Force Diagram:

Net Force:FNet,x =

FNet,y =

14. Draw a force diagram for an airplane flying at a constant velocity in level flight.

System Schema: Force Diagram:

Net Force:FNet,x =

FNet,y =

©Modeling 2014 Adepted from Workshop Project 2006/STL Group-J. Bartin, R. Rice, D. Rice Unit - Multiple Interaction, v1.1

16. A baseball player slides into home plate, slowing as they come to the plate.

System Schema: Force Diagram:

Net Force:FNet,x =

FNet,y =

18. A basketball dropped from a window on its way to the ground.

System Schema: Force Diagram:

Net Force:FNet,x =

FNet,y =

©Modeling 2014 Adepted from Workshop Project 2006/STL Group-J. Bartin, R. Rice, D. Rice Unit - Multiple Interaction, v1.1