Newton's Laws

Vocab 1

100

What is a push or pull exerted on an object

force

200

What are equal forces acting on one object in opposite directions? 

balanced force

300

forces acting on an object that have a net force that is

unbalanced force

400

The sum of all forces acting on an object

net force

500

 Which law of Newton is- an object at rest remains at rest and an object in motion remains in motion with the same speed and direction unless acted upon by an outside force.

Newton's First Law

Vocab 2

100

Force equals mass times acceleration

Newton's Law 1, 2, or 3

Newton's second law

200

For every action, there is an equal and opposite reaction

Newton's Third Law

300

A force of attraction due to their masses

gravity

400

The tendency of an object to resist change

inertia

500

fluid friction acting on an object through the air

air resistance

Newton's Laws

100

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force

Newton's First Law of Motion

200

What is "Law of ____________ also known as Newton's first law?  The tendency of an object to resist any change in its motion.  Increases as the mass increases.

• tendency of an object to resist any change in its motion

• increases as mass increases

Law of Inertia

300

An object will not change its ___________ unless acted upon by an ___________  ________________

motion

unbalanced force

400

Objects with greater____________ have more inertia

matter

mass

weight

mass

500

• the force that opposes motion between 2 surfaces

• depends on the: types of surfaces and the force between the surfaces

• is it inertia, gravity, or friction

friction

Newton's Laws

100

Force= mass x ________________

speed

acceleration

friction

acceleration

200

What does Newton's Second Law State?

Force=

Force=Mass x acceleration

300

Force is measured in______. A ________ is abbreviated by an ____ 

Newtons           Newton    N

400

What force would be required to accelerate a 60 kg mass by 2 m/s2

120 N

500

The formula for acceleration=force/mass.  A 6.0 kg shotput is thrown with 30 N of force.  What is its acceleration?

5 m/s/s 

Newton's Laws

100

The rate at which velocity changes

velocity

acceleartion

speed

acceleration

200

• Which Lasw states the following

• When one object exerts a force on a second object, the second object exerts an equal but opposite force on the first.

                or

• For every action, there is an equal and opposite reaction

Newton's Third Law

300

• More acceleration is small or large mass
• Less acceleration is more or less mass

• Small mass ⇒ more acceleration

• Large mass ⇒ less acceleration

400

A football is thrown with 30 N of force and has an acceleration of 24 m/s2.  What is the football’s mass?

Remember: m = F ÷ a

m = 30 N ÷ 24 m/s2 

m = 1.25 kg

500

• How can a horse
  pull a cart if the cart
  is pulling back on
  the horse with an equal but opposite force? 

• forces are equal and opposite but act on different objects

• they are not “balanced forces”

the movement of the horse depends on the forces acting on the horse