Force and Motion chapter one review

What is air resistance?

• friction in the air that slows things down

• when an airplane flies into a cloud

• when you feel the air hitting your face

What kind of surface is a bowling alley? 

• smooth
• rough

What is Friction?

• How much something weighs
• When 2 objects slide against each other
• How fast something is going

What are EQUAL forces acting on an object in opposite directions that do not change the object's motion?

• Friction
• Weight
• Balanced Forces
• Unbalanced Forces

The force that two surfaces exert on each other when they rub against each other.

• Friction
• Gravity
• Weight
• Force

If an object does not move at all, what does that mean about the forces acting on the object? 

• The forces are balanced. 
• The forces are unbalanced. 

Ted was rolling a pencil on his desk and the pencil fell down to the ground. What force made this occur?

• Magnetism
• Gravity
• Friction

It's field day and two classes are playing tug-of-war. One side has 4 people and the other side has 8 people. What is this an example of?

• balanced forces
• unbalanced forces

Sam kicks a soccer ball across the backfield. What force works to slow the ball down?

• pushes or pulls

• friction

• magentism

• gravitation

How is velocity different from speed?

• Velocity is when an object goes in reverse.

• Velocity is the direction an object, and has nothing to do with speed.

• Velocity is speed and direction together.