Conceptual Physics Unit 1 Review

Which statement is true about a scientific LAW?

• It explains why something happened

• It describes a condition often using math

• It is often changed as new information is revealed

• It cannot be tested in the real world.

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Which is true about a scientific theory?

• It describes how something happens using math

• It can become a law if it is tested enough

• It explains why something happens

• It does not change with new informations

Which of these is a force?

• mass

• gravity

• velocity

• friction

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Which of these is NOT a contact force? (A force that is in contact with the object)

• A ball was kicked and is now rolling across a field

• Gravity causes an object to fall to the earth

• A sign is held up by two ropes

• Friction prevents a car from rolling down a hill

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Which free body diagram shows an object at rest?

• A

• B

• C

• D

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Which of these is a vector measurement?

• Distance

• Speed

• Time

• Velocity

When the card is removed quickly, the coin drops into the cup. Which force changed?

• Normal force of the card on the coin

• Gravity's affect on the coin

• Air resistance on the coin

• Friction of the card on the coin

Tags

NGSS.HS-PS2-1

šA 2000 kg car is driving at a constant velocity on a gravel road that exerts a friction force of  0.60 N. What is the weight of the car? (W=m*g)

• 1,200 N

• 3,333 N

• 20,000 N

• 60 N

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šA 1500 kg car is driving at a constant velocity on a gravel road that exerts a friction force of  0.60 N. How much force is needed to accelerate the car by 10 m/s²?

• 150 N

• 60 N

• 1,500 N

• 15,000 N

Tags

NGSS.HS-PS2-1

Which of these is a change in distance over time?

• Velocity

• Acceleration

• Displacement

• Inertia