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100
VOCAB -- force that results when 2 materials rub against each other
friction
100
What force keeps a satellite in orbit?
gravity
100
VOCAB -- a device that changes the direction or amount of effort needed to do work
machine
100
VOCAB -- the push or pull on an object
force
100
VOCAB -- the energy used when a force moves an object
work
200
VOCAB -- made up of 2 or more simple machine
complex machine
200
VOCAB -- combination of all forces acting on an object
net force
200
Name the 4 simple machines we learned about.
pulley, wheel and axle, lever, inclined plane
200
VOCAB -- when an object resists any change in motion
inertia
200
VOCAB -- how strong a force is
magnitude
300
VOCAB -- which way a force is acting
direction
300
VOCAB -- when forces acting on an object are balanced
equilibrium
300
When it comes to magnetic and electric forces, what do opposite charges do? BONUS: what do the same forces do?
attract BONUS: repel
300
VOCAB -- the speed at which work is done
power
300
How does force affect acceleration?
changes an object's velocity by causing it to speed up, slow down, or change direction
400
VOCAB -- unit work is measured in
joules
400
VOCAB -- the rate at which the velocity of an object changes over time
acceleration
400
VOCAB -- the speed and direction of an object's motion
velocity
400
VOCAB -- unit power is measured in
watts
400
What is another name for Newton's third law?
Action-Reaction Law (of motion)
500
Finish the statement: 'for every action, there is...' BONUS: What Newton's Law is this?
'an equal and opposite reaction' BONUS: third law
500
Finish the statement: 'Objects at rest stay at rest and....' BONUS: What Newton's Law is this?
'objects in motion stay in motion.' BONUS: first law
500
What are the 5 types of motion?
variable, constant, vibrational circular, periodic
500
How do electricity and magnetism act on different objects?
push or pull objects
500
A train travels 100 miles north in 4 hours. What is the velocity of the train?
25 mph/north