Exam 3 Preap Physics Numbers 11-15 2016
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- 1.11. When the net force acting on an object is 0 N,
- A.
A. the object’s motion changes.
- B.
B. there are no forces acting on the object.
- C.
C. the forces acting on the object are balanced.
- D.
D. the forces acting on the object are unbalanced.
- 2.12. If a nonzero net force is acting on an object, then the object is definitely
- A.
A. at rest.
- B.
B. being accelerated.
- C.
C. moving with a constant velocity.
- D.
D. losing mass.
- 3.13. Which statement about the acceleration of an object is correct? (Hint: Use the equation.)
- A.
A. The acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to the mass of the object.
- B.
B. The acceleration of an object is directly proportional to the net external force acting on the object and directly proportional to the mass of the object.
- C.
C. The acceleration of an object is inversely proportional to the net external force acting on the object and inversely proportional to the mass of the object.
- D.
D. The acceleration of an object is inversely proportional to the net external force acting on the object and directly proportional to the mass of the object.
- 4.14. A truck and a car uniformly accelerate from rest to a velocity of 3.0 m/s in equal time intervals. The truck is ten times as massive as the car. Which of the following statements is correct?
- A.
A. The acceleration of the truck is 1/10 that of the car.
- B.
B. The truck travels 1/10 the distance of the car.
- C.
C. The force on the truck is 10 times the force on the car.
- D.
D. all of the above
- 5.15. In which situation is the net force acting on a car zero?
- A.
A. The car increases speed and changes direction.
- B.
B. The car increases speed but does not change direction.
- C.
C. The car maintains its speed but changes direction.
- D.
D. The car maintains both its speed and direction.
Questions: 5 | Attempts: 185 | Last updated: Nov 21, 2016
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Sample Question1.Which of the following sentences uses work in the scientific sense?
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Sample QuestionWhen comparing the momentum of two moving objects, which of the following is correct?
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