Force Quiz Retake

What is a NON-CONTACT force?

• A push or pull force where the objects are not touching

• A push force where the objects are touching.

• An example would be pulling open a door.

• The only type of force that exists in the world.

When two objects are closer to one another, the force of gravity between them ____________.

• Increases

• Decreases

• Stays the same

• Divides by a factor of 100

What is the difference between MASS and WEIGHT?

• Mass DOES NOT change if the force of gravity changes. Weight DOES change if the force of gravity changes.

• Mass DOES change if the force of gravity changes. Weight DOES NOT change if the force of gravity changes.

• Mass is related to gravity while weight is not.

• If an object is SMALLER, it always has more mass and less weight than a LARGER object.

What are the three NON-CONTACT forces we are studying this unit?

• Gravity, friction, air resistance

• Forces, motion, human body systems

• Friction, electricity, muscular system

• Gravity, electricity, and magnetism

The diagram below shows that ______________________.

• As distance increases, the electric force increases.
• As distance decreases, the objects become less attractive.
• Electric forces are only slightly affected by distance.
• As distance increases, the electric force decreases.

If each object has the same mass, which pair has the strongest gravitational attraction?

• The first, because it appears to weigh the most.
• The first, because the arrows are thickest.
• The  second, because it has an even balance of weight and distance.
• The first, because the objects are closest together.

Static electricity is a...

• Contact Force

• Non-Contact Force

Air resistance is a...

• Contact Force

• Non-Contact Force

Normal force is a...

• Contact Force

• Non-Contact Force

As the MASS of an object increases, its gravitational pull _________.

• Stays the same

• Decreases, then increases, then decreases

• Decreases

• Increases