Balance and Unbalance Force

An airplane is travelling North through the sky at a constant speed when turbulence causes it to take a different route, changing its direction. Explain the forces at work on this plane.

• Unbalanced, because the plane is moving forward, not backwards

• Unbalanced, because the speed is constant and there is a change in direction

• Balanced, because the plane is not falling to a lower altitude

• Unbalanced, because the plane is in motion

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

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

• unbalanced

• weak

• balanced

• Hulk Smash!

Which of the following statements is true?

• Balanced forces cause a change in motion.

• Unbalanced forces cause a change in motion.

• Forces do not effect the change in motion.

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NGSS.MS-PS2-2

A rocket lifting off the launch pad.

• Balanced Force

• Unbalanced Force

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NGSS.HS-PS2-1

Are the forces acting on the sled in Section 1 balanced or unbalanced? The track is smooth and frictionless.

• Balanced

• Unbalanced

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Are the forces acting on the sled in Section 3 balanced or unbalanced? The track is smooth and frictionless.

• Balanced

• Unbalanced

Tags

NGSS.MS-PS2-2

Are the forces acting on the sled in Section 2 balanced or unbalanced? The track is smooth and frictionless.

• Balanced

• Unbalanced

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NGSS.MS-PS2-2

Are forces balanced or unbalanced when an ice skater is moving at a constant speed in a straight line?

• Balanced

• Unbalanced

Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?

• The ribbon will move to the left and group A will win the tug-of-war.

• The ribbon will move to the left and group B will win the tug-of-war.

• The ribbon will move to the right and group B will win the tug-of-war.

• The ribbon will move to the right and group A will win the tug-of-war.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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

• Earth orbiting the Sun 

• A baseball that has been thrown to home plate.

Tags

NGSS.MS-PS2-2