Balanced and unbalanced forces

Which could be an example of an unbalanced force?

• A plate sitting on a dining table
• A ball at the top of a hill that is not moving
• The Earth floating in space

• A baseball that has been thrown to home plate.

Tags

NGSS.MS-PS2-2

Which could be an example of a balanced force? "Moving objects can be balanced if they are traveling without other forces effecting them, like gravity or friction"

• An asteroid moving at a constant speed through space. 

• A car accelerating from a stop sign
• A box of dishes falling from a counter 
• A rocket taking off 

Which of the following objects will experience an unbalanced force?

• A bike rider on a smooth and level road, pedaling at a constant rate.

• A train pulling on another train, each with the same amount of force.

• A chair sitting on the floor with balanced forces acting in opposite directions.

• A ball rolling across the floor with friction acting in the opposite direction.

Tags

NGSS.MS-PS2-2

If these teams are pulling with the same amount of force what will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

two forces acting in opposite directions on an object, and do not cause a change in motion; equal in size

• Force

• Balanced Force

• Unbalanced Force

• Inertia

two forces acting on an object and causes a change in motion; not equal in size.

• Force

• Balanced Force

• Unbalanced Force

• Net Force

What is a PUSH or PULL of an object?

• Motion
• Force
• Friction
• Gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Balanced or unbalanced?

• balanced
• unbalanced

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

If an object is not moving the forces acting upon it are _____________

• unbalanced
• weak
• balanced
• Hulk Smash!

The moon orbiting the Earth at a constant speed. "No friction or gravity"

• Balanced Force

• Unbalanced Force

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4