Balanced & Unbalanced Forces

Changes in motion all have one thing in common. They require a ______, which is a push or a pull.

• velocity
• friction
• force
• energy

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Forces can cause an object at rest to ___.

• change shape
• stay still
• move
• disappear

Tags

NGSS.MS-PS2-2

____ is the measure of a force that gravity exerts on an object.

• weight
• volume
• density
• mass

Tags

NGSS.MS-PS2-4

Do all forces result in a change in motion?

• yes

• no

Tags

NGSS.MS-PS2-2

What do we call a force of attraction between two objects?

• magnetism
• repulsion
• friction
• gravity

Tags

NGSS.MS-PS2-4

What do we call a force that opposes motion?

• inertia
• acceleration
• gravity
• friction

Friction can also exist between air and a moving object. This is called

• air resistance
• air drag
• air tension
• air friction

_______ are forces on an object that are equal in size and opposite in direction.

• balanced forces
• unbalanced forces
• net forces
• external forces

_____ are forces that cause a change in motion.

• internal forces
• static forces
• balanced forces
• unbalanced forces

Tags

NGSS.MS-PS2-2