Exam 3 Target 6 Retake Preap
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- 1.Which statement about the acceleration of an object is correct?
- A.
A. 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.
- B.
B. 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.
- C.
C. 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.
- 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.
- 2.A large force acting on a small massed object causes
- A.
A. a small acceleration.
- B.
B. a large acceleration.
- C.
C. no acceleration
- D.
D. equilibrium.
- 3.The change in the horizontal velocity of a 12-kg scooter is +0.5 m/s. What is the net horizontal force acting on it?
- A.
a. +24 N
- B.
b. +6.0 N
- C.
c. some number greater than 0 N
- D.
d. 0 N
- 4.A student holds a 6-N block of wood from a spring balance in an express elevator that maintains constant velocity traveling between floors. A spring scale reading of 5.9 N indicates that the elevator is
- A.
a. starting an ascending trip.
- B.
b. ending an ascending trip.
- C.
c. ending a descending trip.
- D.
d. traveling between floors.
- 5.In which situation is the net force acting on a truck 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.
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