AP Physics Unit 2 Forces Review

Where is the center of mass of these blocks?

(x, y)_COM=

• (1, 2)

• (1, 3)

• (2, 2)

• (2, 3)

the mass of the right side is ------ compared to the left side.

• more
• less
• equal
• None of the above

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NGSS.HS-PS2-1

this cupboard is filled with boxes. will it topple over ?

• it will
• it will not
• it will if the weight remains inside the base

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NGSS.HS-PS2-1

Name the missing force...

• applied force
• weight force
• lift
• normal force

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Paired forces are

• in opposite directions

• always equal

• not possible

• added together

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In a force diagram, or free-body diagram, the pointy-end of the arrow tells you this about the force:

• relative strength

• relative distance

• relative direction

A hockey puck glides to the right across the ice at a constant speed.

• 
• 
• 
• 

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NGSS.HS-PS2-2

The Coffee cup in the picture is resting on a table. What force(s) are missing from the free body diagram?

• No forces are missing

• The normal force from the table pushing the cup up.

• The normal force form the table pushing the cup down.

• The friction force from the table pushing the cup left and right.

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NGSS.HS-PS2-1

A box slides across a perfectly smooth floor at a constant velocity. (The phrase "perfectly smooth" suggests that there is NO friction). What forces act on the box?

• tension, gravity
• tension, gravity, normal force
• tension, gravity, normal force, friction
• gravity, normal force, friction

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NGSS.HS-PS2-1

A box is moving to the left up a ramp. Which way is the force of friction pointing?

• down the ramp to the right
• up the ramp to the left
• there is no friction
• straight up

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NGSS.HS-PS2-1