Force

a pushor a pullon an object

• gravity

• matter

• friction

• force

the unitused to measure the size or the magnitude of force

• liter

• pounds

• kilogram

• Newton N

resistance to motion of one object moving relative to another.

• gravity

• friction

• matter

• mass

an attractive force that exists between all objects that have mass

• force

• gravity

• friction

• mass

unit often used to measure mass

• ounce

• centimeter

• pound

• kilogram

Which are examples of balanced forces?

• a car parked outside of your house

• a cheetah running at 40mph

• a box dishes falling from the counter

• a rocket taking off

• a baseball in a catcher's pit

What are examples of unbalanced forces?

• a ball hit to centerfield

• a book resting on a table

• a soccer ball at the top of a hill

• a hockey puck sliding across the ice

• a car accelerating from a stop sign

friction that acts on objects when they are restingon a surface

• rolling

• fluid

• static

• sliding

friction that acts on objects when they are sliding over a surface

• rolling

• static

• fluid

• sliding

friction that acts on objects when they are rolling over a surface

• rolling

• static

• fluid

• sliding