Force lesson 1 and 2

a push or a pull exerted on an object.  (L1 E1)

• friction

• gravity

• force

• push

Scientists measure force using a unit called the (L1 E1)

• Newton

• gravity

• force

• friction

the rate at which a distance is traveled. (L1 E1)

• velocity

• friction

• gravity

• Speed

is the speed of an object in a particular direction. (L1 E1)

• gravity

• velocity

• acceleration

• speed

the rate at which velocity changes over time. (L1 E1)

• velocity

• acceleration

• newton

• speed

force that only act between objects that are touching. (L2 E2)

• noncontact force

• Air resistance

• contact force

• gravity

a contact force that acts on the object as it moves through the air. (L1 E2)

• gravity

• air resistance

• noncontact force

• contact force

A force that can act at a distance is called (L1 E2)

• air resistance

• contact force

• gravity

• noncontact force

hange in an object’s shape or motion allows you to identify the _(L1 E3)

• noncontact force

• net force

• contact force

• gravity

change in an object’s shape or motion allows you to identify the_ (L2 E1)

• gravity

• force

• friction

• velocity