Lesson 3 Forces and Motion

A force can be described as __________.

• a push or pull.

• running around in a circle.

• rubbing an object.

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NGSS.MS-PS2-1

Contact forces ___________

• act between objects that are touching.

• are not real.

• are between forces that do not touch.

____________ is a pulling force that stretches something.

• Tension force

• Spring force

• Friction

__________ occurs in an object that has been stretched or squeezed.

• Tension force

• Spring force

• Friction

Friction is a force that __________

• stretches something.

• bounces back after being stretched.

• goes against the motion of an object.

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

Which of the following is NOT a contact force?

• gravity

• spring force

• tension force

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What type of force is being exerted in the picture?

• spring force

• contact force

• noncontact force

Tags

NGSS.MS-PS2-1

Which type of force is being exerted?

• tension force

• friction

• noncontact force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Many forces can act on an object at the same time.

• True

• False

Tags

NGSS.MS-PS2-2

Forces that are not balanced cause a change in motion.

• True

• False

Tags

NGSS.MS-PS2-2