Chapter 1.1 Gravity and Friction

If you kick a soccer ball, it goes up to a certain distance and stops. This happens due to

• gravity

• magnetism

• friction

• weight

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Rough surfaces have

• more friction

• less friction

• same level of friction

• I don't know

Two factors affecting the size of the force of gravity between 2 objects are...

• Mass and Distance

• Mass and Matter

• Distance and Weight

• Weight and Mass

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

• Mass
• Matter
• Weight 
• Terminal velocity 

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What is the force acting between any two objects in the known universe all the time?

• Gravitational Force 
• Force of Friction 
• Normal Force 
• Electromagnetic Force 

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Imagine you travel to another planet. What will change as you walk around the surface of the planet- your mass or your weight?

• Mass

• Weight

• Both

• Neither

Friction is a force that acts in a(n) ___________ direction relative to a moving object.

• similar
• opposite
• parallel
• perpendicular

 What is the unit that measures force?

• Weight
• Net force
• Newton
• Kilogram

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 a constant speed.

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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 Mrs. Rawan knows what will happen.

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