Force and Motion Unit Test

Which graph illustrates the fastest speed?

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Which graph illustrates a stopped object?

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Two football players run into each other for a block. Neither player moves or gets by the other player. This is an example of a/an —

• balanced force

• unbalanced force

• directional force

• measurable force

What is force in science?

• a push or a pull

• the weight added to a vehicle

• energy that is being used

• movement of an object

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is mass?

• when all forces added together equals 0 so there is no movement

• energy that is stored

• movement of an object

• the amount of matter in an object

What is a balanced force?

• When all the forces on an object are equal in size and opposite in direction, they do not change the motion of the object, and the net force is equal to zero.

• When the total forces added up together = any number but zero. This results in a net or total force that moves the object.

• The total amount of force acting on an object.

• A force of attraction between any two masses.

What is an unbalanced force?

• A force of attraction between any two masses.

• The total amount of force acting on an object.

• When the total forces are opposite in direction and unequal in strength.

• When all the forces added total 0 so that an object is at rest and not in motion.

A magnet's ability to attract certain materials...

• magnetism

• magnetic fields

• metal

• iron

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is an example of friction that is helpful?

• Brakes used on a bike
• Tires from a car on the road
• Tread on the bottom of your shoes
• All are examples that are helpful

Rougher surfaces have ...

• greater friction
• less friction
• the same level of friction