Forces Vocabulary

a push or pull on an object

• friction

• force

• inertia

• momentum

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the force that two surfaces exert on each other when the two rub against each other

• friction

• force

• inertia

• momentum

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the force that pulls objects toward each other

• gravity

• free fall

• weight

• Universal Law of Gravitation

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the force of gravity on a person or object at the surface of a planet

• gravity

• free fall

• weight

• Universal Law of Gravitation

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a measure of how much matter is in an object

• mass

• net force

• terminal velocity

• matter

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A measurement of an object's speed and direction

• speed

• direction

• velocity

• inertia

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Are forces applied when the objects involved are in direct contact.

• Contact forces

• Normal forces

• action-at-a-distance forces

Is the force usually exerted by a surface on an object that is resisting against it.

• Friction

• Normal force

• Elasticity

• Tension

Rina’s mother asked her to help move some items from the hall closet to the garage. One item she wanted to move was a large box of old school books. Rina tried to lift the box, but could not pick it up. What force was Rina NOT able to overcome? 

• frictional force
  frictional forcefrictional force
• gravitational force
• electrical force
• magnetic force 
  magnetic force
  

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Force is measured in....

• Galileos 
• Newtons
• Di Vincis
• Einsteins 

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