8th grade Midterm Review for Fall 2018: 8.6 - Physics

Force

a push or a pull on an object that may change the motion of the object

Mass

the amount of matter in an object

Balanced Force

forces on all sides are equal

Balanced Force

net force = 0

Balanced

object's motion will not change with a _________________ force

Net force

the overall force of an object

Newtons

the units used for force

Friction

a force that resists motion when two surfaces are touching each other

gravity

a force that pulls all objects that have mass toward on another

air resistance

the frictional force air exerts against a moving object

motion

any change in the location of an object

Isaac Newton

the scientist who created the 3 laws of motion

inertia

The name of Newton's 1st Law is Law of _________

Inertia

an object at rest will stay at rest and an object in motion will stay in motion; UNLESS acted on by an unbalanced external force" is known as Newton's Law of __________.

stay rest

an object at rest will ________ at ________

stay motion

an object in motion will ________ in ________

unless unbalanced

According to Newton's 1st law; an object at rest will stay at rest _____________ acted on by an __________________ force

acceleration

Newton's 2nd law is known as the Law of __________________

second

The equation "F = mass X acceleration" is associated with Newton's ____ Law ( type out the word

increases

According to Newton's 2nd law; as mass increases, force ___________________

increases

According to Newton's 2nd law; as force increases, acceleration ___________________

decreases

According to Newton's 2nd law; as mass increases, acceleration ___________________

action reaction

The name of Newton's 3rd Law is "Law of ______________-______________

third

for every action there is an equal and opposite reaction" is Newton's ____ law ( type in the word)

inertia

an object's tendency to Resist change in motion is called _______________________

speed

the distance an object travels per unit of time

average speed

the total distance an object travels divided by the total time

constant speed

speed that remains the same or does not change

velocity

speed with a specific direction

acceleration

the change in speed, velocity , or both

distance

how far an object traveled

potential

stored energy is called ________________ energy

kinetic

energy in motion is called _________________________

3

this picture ( a rocket launching into the air) is an example which Newton's Law ( type 1,2, or 3)

3

this picture of a man pulling back an arrow is an example of which Newton's Law ( type 1,2, or 3)

2

this picture is an example of which Newton's Law ( type 1,2, or 3)

1

Example) a man is driving a car at 80 mph without wearing his seatbelt. He slams on the breaks. His car stops but he keeps going through the windshield. This is an example of which Newton's law ( type 1,2, or 3)

mass acceleration

Force = _________________ X _________________________

distance time

Speed = __________________ divided by ______________