WGU C165 Integrated Physical Science
Physics Assessment | Questions and
Answers Graded A+ A car is moving forward and its brakes are being applied. Which of the following is true?
A. The car's velocity is forward, and its acceleration is forward.
B. The car's velocity is backward, and its acceleration is forward.
C. The car's velocity is backward, and its acceleration is backward.
D. The car's velocity is forward, and its acceleration is backward. -
Correct Answer - D. The car's velocity is forward, and its acceleration is backward.
A car moves forward along a horizontal road in a straight line at constant speed. The net force on the car is _______. - Correct Answer - zero
You are pushing a file cabinet across a floor in a straight line at a constant speed. Which of the following can you correctly conclude
about the forces acting on the file cabinet?
A, If you were to exert twice as much force on the file cabinet, it would slide across the floor at twice its original speed.
B. The force that you are exerting on the file cabinet is greater than the force that friction is exerting on it. C. The force that you are exerting on the file cabinet is greater than the force of friction with the cabinet's weight.
D. The force that you are exerting on the file cabinet is equal and opposite to the force that friction is exerting on it. - Correct Answer - D. The force that you are exerting on the file cabinet is equal and opposite to the force that friction is exerting on it.
Inertia is an object's _______________________________________. - Correct Answer - tendency to remain stationary or continue moving in the
same way.
The mass of an object measures _____________________________. - Correct Answer - the amount of matter in an object.
Which of the following is used to increase friction?
A. spraying a lubricant onto a squeaky wheel
B. scattering sand on icy roads
C. waxing floors - Correct Answer - B. scattering sand on icy roads
The force that slows down a person falling is called __________________. - Correct Answer - air resistance
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