1. MOTION AND FORCES REVIEW

2. WHAT FORCE ACTS AGAINST THE MOTION OF A FALLING OBJECT ON EARTH? A.Gravity B.Air Resistance C.Inertia D.Mass

3. ON THE MOON, A HAMMER AND A FEATHER FALL AT THE SAME RATE. ON EARTH, THE HAMMER WILL FALL FASTER THAN THE FEATHER. WHICH OF THE FOLLOWING STATEMENTS BEST EXPLAINS THIS? A.There is no air resistance on the moon B.There is no gravity on the moon. C.There is more gravity on Earth than on the moon. D.The hammer has more mass and thus more air resistance.

4. SATELLITES ORBIT IN SPACE AROUND THE EARTH. WHAT FORCE CAUSES THEM TO CONTINUE IN THEIR CIRCULAR PATH? A.Terminal velocity B.Weight C.Friction D.Centripetal force

5. THE LAW OF UNIVERSAL GRAVITATION STATES THAT ANY TWO OBJECTS IN THE UNIVERSE A.Attract each other B.Repel each other C.Combine to provide a balanced force D.Create friction

6. IN WHICH SITUATION WOULD THE OBJECTS HAVE THE GREATEST GRAVITATIONAL FORCE? A.Two 2kg objects that are 1m apart B.Two 2kg objects that are 2m apart C.Two 10kg objects that are 1m apart D.Two 10kg objects that are 2m apart

7. WHEN THE FORCE OF AIR RESISTANCE ACTING ON A FALLING OBJECT EQUALS THE WEIGHT OF THE OBJECT, IT IS KNOWN AS A.Gravity B.Inertia C.Terminal velocity D.Momentum

8. HOW CAN YOU INCREASE THE MOMENTUM OF AN OBJECT? A.By decreasing its velocity B.By increasing its mass C.By increasing its friction D.By decreasing its acceleration

9. THE TENDENCY OF AN OBJECT TO RESIST A CHANGE IN ITS MOTION IS KNOWN AS A.Mass B.Inertia C.Force D.Balance

10. THE GREATER THE MASS OF AN OBJECT A.The easier the object starts moving B.The greater its inertia C.The more balanced it is D.The more space it takes up

11. THE FORCE OF GRAVITY ON A PERSON OR OBJECT ON THE SURFACE OF A PLANET IS CALLED A.Mass B.Terminal velocity C.Weight D.Free fall

12. WHAT ONE WORD TERM CAN BE USED TO DESCRIBE THE DIFFERENCE BETWEEN SPEED AND VELOCITY? A.Direction B.Time C.Force D.Mass

13. LIFTING A ROCKET OFF THE GROUND AND INTO SPACE CAN BEST BE EXPLAINED BY A.Inertia B.Acceleration depends on mass and force C.Action-reaction forces D.Weight is affected by mass and gravity

14. You have one ball that is dropped and another that is shot out at the exact same time from the same height. Which ball hits the ground first? Explain Same time – effect of air resistance the same for each because same surface area and volume Same force of gravity pushing down

15. An ice skater is skating forward on the ice. Either describe all the forces acting on the ice skater or draw a diagram labeling all of the forces. Explain which pair of forces are balanced forces. groundgravity sliding friction & air resistance push gravity & ground are balanced

16. A book is sitting on the dashboard of a car that is stopped at a traffic light. As the car starts to move forward, the book slides backward off the dashboard. Use the term inertia to explain what happened. The book wants to stay at rest because of its inertia so when it suddenly starts to move it pushes back

17. OTHER THINGS TO KNOW…  Interpreting graphs  Net Forces  Calculations  Speed, Accleration, and Momentum  Use your study guide, packet from Miss Lutzkanin, and notes to review