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22 terms

Mr. Lewis 5th hour

5th hour Day:2 test
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is the speed and direction of an object in motion?
velocity
the unit for force is the newton which stands for?
1kg*m/s squared
The net force of an object is measured by multiplying its mass times its acceleration?
Newton's 2nd law
amt. of water displaced by an object is equal to the buoyant force acting upon the object?
Archimedes principle
an object at rest will remain at rest or an object in motion will remain in motion unless an outside force acts upon it.
Newton's 1st law
the speed of a fluid is inversely proportional to the amount of pressure that fluid exerts
Bernoulli's principle
an airplane uses a curved wing called an _____ to create a lift
airfoil
a gas less dense than air
helium
_____ gravity and friction are always acting on you.
air pressure
an increase in thermal energy causes
thermal expansion
the lack of kinetic energy occurs at
absolute zero which is -273 degrees celsius
a teeter totter is an example of
1st class lever
a wheelbarrow is an example of
2nd class lever
a broom, rake, hockey stick, fishing rod
3rd class lever
as the fluid rises it cools and _____ in density
increases
e=mc squared is the equation devised by
Albert Einstein
a joule stands for
1n*1m
1km/h
.2777m/s
1mph
.4480m/s
km
.62 mile
1mile
1.609km
1 mile
1609m