Force and Motion Review

What is air resistance?

• friction in the air that slows things down
• when an airplane flies into a cloud
• when you feel the air hitting your face

Tags

NGSS.MS-PS2-2

What is one use of friction?

• It helps objects go faster.

• It helps objects go up higher.

• It helps make objects go slower or stop.

What does a curved line on a distance-time graph show?

• That the speed is changing. 
• That the object is not moving. 
• That the object is constant. 

Tags

NGSS.MS-PS3-1

What are EQUAL forces acting on an object in opposite directions that do not change the object's motion?

• Friction
• Weight
• Balanced Forces
• Unbalanced Forces

The force that two surfaces exert on each other when they rub against each other.

• Friction
• Gravity
• Weight
• Force

If an object does not move at all, what does that mean about the forces acting on the object? 

• The forces are balanced. 
• The forces are unbalanced. 

Tags

NGSS.HS-PS2-1

Is a force that pulls objects toward each other and down to the ground

• Force
• Friction
• Gravity
• weight

Tags

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What are UNEQUAL forces acting on an object in opposite directions that cause motion?

• Balanced Forces
• Unbalanced Forces
• Gravity

Tags

NGSS.MS-PS2-2

What does this graph represent?

• Constant speed

• An object acceleration

• An object at rest

It's field day and two classes are playing tug-of-war. One side has 4 people and the other side has 8 people. What is this an example of?

• balanced forces
• unbalanced forces

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1