What Are Some Type of Forces?

Tammy and Steven are moving a heavy box. Tammy pushes with a force of 40. Steven pushes with a force of 25. Together they use a force of ____ to move the box.

• 15

• 65

• 0

• 25

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These actions use a lower friction strength:

• using bicycle brakes

• striking a match

• sliding on ice

• walking uphill

• coasting on a bicycle

These actions use a higher friction strength:

• using bicycle brakes

• striking a match

• sliding on ice

• walking uphill

• coasting on a bicycle

What do we call the strength of gravity's pull on an object?

• the object's size

• the object's motion

• the object's weight

• the object's direction

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It takes an enormous _______ force to move a rocket away from Earth.

• unbalanced

• gravitational

• contact

Why do you feel the handle's force against your hand when you pull a loaded wagon?

• Gravity is pushing up on you.

• Friction is pulling down on you.

• The wagon is pulling back on you.

Tags

NGSS.MS-PS2-1

Most objects have more than one _____ acting on them at a time.

• balanced

• direction

• force

• unbalanced

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NGSS.MS-PS2-2

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When the forces are _____, the object's motion does not change.

• balanced

• direction

• force

• unbalanced

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NGSS.MS-PS2-2

______ forces cause a change in speed or direction.

• balanced

• direction

• force

• unbalanced

Tags

NGSS.MS-PS2-2

These are examples of balanced forces:

• a cup sitting on a table

• a bird sitting in a tree

• an apple falling off of a tree

• a football thrown by the quarterback

• a parked car

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