Newton's Laws: The Physics and Force of Motion

Newton's First Law (pg. 77)

• is known at the action/reaction law

• is defined as F=ma

• states that acceleration is proportional to the acting forc

• states that every object at rest stays at rest and object in motion stays in motion at a constant velocity

What is velocity? (pg. 75)

• is a vector quantity that describes direction only

• is a vector quantity that describes speed only

• is a vector quantity that describes spend of an object and its direction of travel

• is basically the same as acceleration

What is force?

• a push or pull on an object

• something that's only in outer space

• something that only moving objects have

• measured in m/s

An unbalanced force can _____________ (pg. 81)

• cause an object to remain still

• will affect acceleration of an object

• be measured in kg

• every object has unbalanced forces acting on it

What SI unit is used to measure force?

• m/s

• kg

• mph

• N

What is inertia? (pg.79)

• the tendency of objects to resist any change in motion

• a push or pull on an object

• a change in an object's position over time

Friction_______ (pg.79)

• causes objects to speed up

• is a force that opposes motion between two surfaces that are in contact

• only occurs on smooth surfaces

• describes objects at rest

What is Newton's Second Law? (pg. 81)

• A body in motion stays in motion unless acted on by an external force

• the action/reaction law

• is the only law that Newton did NOT come up with

• acceleration of an object depends on the mass of an object and the amount of force applied

Acceleration is ____________ (pg. 85)

• directly proportional to the net force on an object

• a push or pull on an object

• cannot be mathematically calculated

• is measured in Newtons

What is the mathematical equation that is used for Newton's Second Law?

• p=mb

• F=ma

• x=y

• y=x