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- 1. Multiple Choice
Sometimes tectonic plates do not move easily past one another, and the plates become stuck. Forces build up, and when the plates finally move, tension is released, as shown below. The sudden movement of the plates is caused by -the mass of the platesthe weight of the platesunbalance forcesgravitational force - 2. Multiple Choice
Which of the following objects will experience an unbalanced force?
A bike rider on a smooth and level road, pedaling at a constant rate.
A train pulling on another train, each with the same amount of force.
A chair sitting on the floor with balanced forces acting in opposite directions.
A ball rolling across the floor with friction acting in the opposite direction.
- 3. Multiple ChoiceAccording to Newton’s Law of Inertia, an object that is moving will change its motion only if what kinds of forces act on it?Constant forcesUnbalanced forcesUnbalanced forcesStrong forcesGravitational forces
- 4. 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
- 5. 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 Speed
Balanced Forces, Acceleration
Unbalanced Forces, Constant Speed
Unbalanced Forces, Acceleration
- 6. Multiple ChoiceIf two forces act on an object in the same direction, the net force is the _____________the difference between the two forcesthe sum of the two forcesOnly one of the forces acts on the objectDOOMSDAY!
- 7. Multiple ChoiceWhat is the net force?40 N left0 N Balalnced400 N right40 N right
- 8. Multiple Choice
What is the net force?
400 N Up at an increasing speed
400 N Down at an increasing speed
400 N Down at a constant speed
800 N Down at a constant speed
- 9. Multiple ChoiceWhy does a book on a table not move?No forces are acting on the bookGravity is the only force acting on the bookForces of the table pushing up and gravity pulling down are balanced
- 10. Multiple ChoiceWhat will cause an object to move?Applied forcesBalanced forcesUnbalanced forces
- 11. Multiple Choice(T or F?) A balanced force is only an object that is not moving.TrueFalse
- 12. Multiple ChoiceAre forces balanced or unbalanced when a car is moving at a constant speed in a straight line?BalancedUnbalanced
- 13. Multiple ChoiceWhy is person B having a hard time moving down the hill?Person B has more friction than person A.Person B has the same friction as person A.Person B is out of shape.Person B has less friction has person A.
- 14. Multiple Choice
If the car in the diagram rolls faster and faster as it moves down the ramp, you can be sure that
there is no friction acting on the object.
the forces acting on it are unbalanced.
the net force on the car is 0 N.
only gravity is acting on the car.
- 15. Multiple Choice
Based on the information in the diagram, what is the net force acting on this object?
12 N downward at a constant speed
4 N upward at an increasing speed
4 N downward at an increasing speed
8 N to the left at a constant speed
- Answer choicesTagsAnswer choicesTags