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Friction, Mass, And Gravity

Test Description: Physics

Instructions: Answer all questions to get your test result.

1) What force occurs when 2 objects rub against each other?

AMass BGravity CInertia DFriction

2) What force that always attracts or pulls objects toward each other without direct contact or impact?

AInertia BFriction CMagnetisim DGravity

3) What 2 factors determine the amount of gravitation attraction between objects?

AMass and weight BMass and distance apart CMass and friction DDistance and age

4) Objects on Earth are pulled____

Atoward the moon Btoward the center of Earth Ctoward the sun Din all directions

5) If air resistance is ignored, which of the following are true?

Aan object with more mass will accelerate faster Ban object with less mass will accelerate faster CALL are correct Dany objects dropped at the same time will land at the same time

6) Which of the following would cause more friction?

Aa light object rubbing against a rough surface BA massive object rubbing against a smooth surface Ca massive object rubbing against a rough surface Da light object rubbing against a smooth surface

7) Which of the following would require more force to move, start, or stop it?

AA bus with a mass of 2500 kg BA truck with a mass of 2,000 kg. CA car with a mass of 200 kg. DA bike with a mass of 20 kg.

8) Which of the following are ways to reduce friction?

AAll are correct BApply less force CSmooth/oil/lubricate the surface DAdd wheels

9) If an object is in motion, and more force is applied to it, it will_____

ASlow down BSpeed up CStop DAll are correct

10) What would happen if friction did not exist?

AWe would slow down more slowly BObjects would have more mass CObjects would not be able to move DObjects would never stop

*select an answer for all questions

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