Review -Forces

TRUE OR FALSE: Unbalanced forces result in a change of motion.

• True

• False

What is the difference between Weight and Mass?

• Weight stays the same; Mass depends upon gravity

• Mass and Weight both stay the same

• Mass and Weight both change due to gravity

• Mass stays the same; Weight depends upon gravity

Static Friction is ?

• Two surfaces slide over each other

• When a solid moves through a liquid

• Occurs on objects that are not moving

• An object rolling across a surface

Sliding Friction is ?

• Two surfaces slide over each other

• When a solid moves through a liquid

• Occurs on objects that are not moving

• An object rolling across a surface

What is Friction ?

• The distance an object travels per unit of time

• Speed in a given direction

• Force that opposes motion

• Force that pulls objects towards each other

What is Gravity ?

• The distance an object travels per unit of time

• Speed in a given direction

• Force that opposes motion

• Force that pulls objects towards each other

The sum of all forces acting on an object.

• Contact Force
• Balanced Force
• Unbalanced Force
• Net Force

What is the net force?

• 20 N 
• 0 N 
• 400 N 
• 40 N 

What is the unit to MEASURE force?

• Kilogram

• Meter

• Pounds

• Newton

A ____________ is a push or a pull on an object.

• friction

• force

• magnet

• gravity