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C 165 / C165 Objective Assessment Review (Latest Update 2025 / 2026) Integrated Physical Sciences | Questions with Verified Answers | Grade A | 100% Correct - WGU

Question:

If the net force acting on an object is halved, how will the acceleration change?

Answer:

The acceleration will be half as much.

Question:

Two tugboats attach their lines to separate barges with the same masses in a shipping channel. If one tugboat pulls Barge A toward the west while the other tugboat pulls Barge B in the same direction, applying twice as much force, which barge will accelerate more?

Answer:

Barge B

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Question:

Which statement regarding inertia is correct?

Answer:

Inertia is the tendency of an object to keep its same motion.

Question:

A moving van worker is trying to move a couch. Due to inertia, what does the amount of force that needs to be applied to get the couch to start moving across the room depend on?

Answer:

The mass of the couch

Question:

If you press your hand downward on a book lying on a table, what is the reaction force to your hand?

Answer:

The book pushing up against your hand

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Question:

Which scenario involves an action-reaction force pair?

Answer:

A kangaroo pushes off the ground, and the ground pushes the kangaroo forward.

Question:

Which is true regarding action-reaction forces?

Answer:

Objects that are interacting do not have to be moving for Newton's third law to apply to them

Question:

If the acceleration of an empty truck is 1.5 m/s2, what will happen to its acceleration if it is fully loaded and its total mass doubles?

Answer:

The acceleration will be half as much.

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Question:

A driver uses a forklift to push a full cart of bricks halfway down an aisle with a force of 20 N. If the driver pushes an empty cart the rest of the way down the aisle using the same 20 N of force, how does the acceleration of the empty cart compare with that of the full cart of bricks?

Answer:

The acceleration of the empty cart will be more than that of the full cart because it has less mass.

Question:

Which term describes a research project in which scientists place microphones at the bottom of the seafloor to study the sounds orca whales make?

Answer:

A field study

Question:

The Hubble space telescope was launched into orbit to take far sharper images than possible on Earth. It has since collected data that show some distant stars to have planets.

Which type of scientific investigation does this describe?

Answer:

An observational study

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