Gravity and Friction

These swimmers are most likely experiencing _________.

• Rolling Friction

• Sliding Friction

• Fluid Friction

• Static Friction

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass and distance 

• mass and volume

• distance and weight 

• weight and mass

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As mass increases, what happens to the gravitational force?

• It increases.

• It decreases.

• It stays the same.

• It acts as a 3rd degree derivative function.

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As the distance between 2 objects increases, what happens to gravitational force?

• It increases.

• It decreases.

• It stays the same.

• Only Mr. Silvio knows what will happen.

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The force of gravity acting on an object is the object's ______.

• Mass

• Matter

• Weight 

• Terminal velocity 

Which statement best explains why the car rolled down the wood ramp the fastest?

• There was more force applied to the car on the wood ramp.

• There was less friction on the surface of the wood ramp.

• The wood ramp was higher than the other ramps.

• The car on the wood ramp had more mass.

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Lilly has a flat piece of paper and a ball of paper. She drops both papers at the same time from the same height. The ball of paper hits the ground first. Which force acts on the flat piece of paper that slows it down?

• friction

• gravity

• inertia

• magnetism

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A man is pushing a ball up a hill. If the man stops pushing the ball and steps out of the way, what will most likely happen to the ball?

• It will stop on the hill.

• It will roll down the hill.

• It will roll to the side toward the man.

• It will fly.

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How would the absence of friction affect a marble traveling on a long, straight path?

• The marble’s speed would decrease.

• The marble’s speed would increase.

• The marble would stop immediately.

• The marble would remain at constant speed.

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John stands at the top of a steep hill and pushes a ball over the edge with his foot. Which force causes the ball to continue rolling down the hill?

• mass

• gravity

• friction

• air resistance

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