Forces and Newton's 1st Law

Which force is exerted by a stable surface, and points directly out from the surface?

• Gravity

• Normal force

• Friction force

• Applied force

• Air resistance

Which force pulls all objects back down to the ground?

• Gravity

• Normal force

• Friction force

• Applied force

• Air resistance

Which force occurs between surfaces sliding against each other?

• Gravity

• Normal force

• Friction force

• Applied force

• Air resistance

Which force always opposes motion, and is only significant at high velocities?

• Gravity

• Normal force

• Friction force

• Applied force

• Air resistance

What force can prevent an object from sliding down a hill, even when no one is pushing the object?

• Gravity

• Normal force

• Friction force

• Applied force

• Air resistance

What force is present when someone pushes an object?

• Gravity

• Normal force

• Friction force

• Applied force

• Air resistance

Which force is given to you when you are told an object's "weight?"

• Gravity

• Normal force

• Friction force

• Applied force

• Air resistance

If an object is stable and at rest, which of the following must be true?

• The forces acting on the object are unbalanced

• The forces acting on the object are balanced

• There are no forces acting on the object

• None of the above must be true

True or False: If an object is not moving, there must not be any forces acting on it

• True

• False

What is the name for a push or pull?

• A movement
• A force
• Speed
• Density

Tags

NGSS.MS-PS2-2