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- 1. Multiple Choice
A wheeled cart is moving to the right at a constant speed. Two forces of equal magnitude are acting upon the cart. Which of the following best describes the forces and motion of the cart?Balanced Forces, Constant SpeedBalanced Forces, AccelerationUnbalanced Forces, Constant SpeedUnbalanced Forces, Acceleration - 2. Multiple ChoiceWhat is the net force?40 N left0 N Balalnced400 N right40 N right
- 3. Multiple ChoiceWhich could be an example of a balanced force?An asteroid moving at a constant speed through spaceA car accelerating from a stop signA box of dishes falling from a counterA rocket taking off
- 4. Multiple ChoiceWhich could be an example of an unbalanced force?A plate sitting on a dining tableA ball at the top of a hill that is not movingEarth orbiting the SunA baseball that has been thrown to home plate.
- 5. Multiple Choice
Calculate the Net Force.
60N, Left
40N, Right
0N
60N, Right
- 6. Multiple ChoiceYou and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?60 N right10 N left60 n right50 N left
- 7. Multiple ChoiceThe tendency of an object at rest to stay at rest unless it is acted upon by a force is called ___________________inertiamotiongravitylubricant
- 8. Multiple Choice
Suppose that an astronaut throws a baseball in outer space at a location far from significant influences of gravity and air resistance. One would expect that the baseball would ____.
eventually stop since all objects ultimately "lose their steam"
eventually stop as its inertia slowly becomes used up
continue in motion with the same speed and direction
either a, b, or c -- depending on whether the astronaut continues to push it
- 9. Multiple Choice
The law of inertia (Newton's first law) applies _____.
to moving objects only
only to objects that are not moving
to both moving and nonmoving objects
- 10. Multiple Choice
A skateboard rolls down a hill, reaches the level surface and eventually comes to a stop. The fact that the skateboard ultimately stops is best explained by ____.
an unbalanced force would be required to keep the sled moving forward at constant speed
the presence of an unbalanced force (e.g., friction) can cause a moving object to stop
the presence of inertia causes it to stop
the natural tendency of any object is to ultimately stop
- 11. Multiple Choice
All objects have inertia
True
False
- 12. Multiple Choice
Mac and Tosh are arguing in the cafeteria. Mac says that if he flings the jello with a greater speed it will have a greater inertia. Tosh argues that inertia does NOT depend upon speed, but rather upon mass. Who is correct?
Mac
Tosh
Neither
Both
- 13. Multiple Choice
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by a(n) ____________________.
unbalanced force
inertia
mass
balanced force
- 14. Multiple Choice
More mass = More inertia
True
False
- 15. Multiple Choice
Diagram shows a man jerking a table cloth. The glass remain on the table because of inertia. Which action increase the inertia ?
Use a rougher cloth
Use a smoother cloth
Pull the cloth with greater force
Fill the glass with more water.
- 16. Multiple Choice
Inertia is Newton's _______ Law of Motion.
First
Second
Third
- Answer choicesTagsAnswer choicesTags