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Physics
Final
72
Physics
12th Grade
12/17/2006

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Cards

Term
Mega (M)
Kilo (k)
None
Centi (c)
Milli (m)
Micro (u)
Definition
10^6
10^3
10^0
10^-2
10^-3
10^-6
Term
Distance Traveled
Definition
How long something moves measured along the path.
Term
Displacement
Definition
How far did something get from the starting point
Term
Vector
Definition
A quanitiy where direction is important
Term
Scaler
Definition
A quantity where direction is not important
Term
Convert 3,500 Km to Mm
Definition
3.5 Mm
Term
Convert 4.2 Km to cm
Definition
420,000
Term
Convert .00489 Kg to g
Definition
4.89 g
Term
Convert 72 inches to feet
Definition
72 in. (1ft/12in) = 72/12 = 6ft
Term
When do you use the pacific rule?
Definition
When there is a decimal point
Term
What is the Pacific rule?
Definition
You start on the left, and once you reach the first non-zero you count it and everything after it as a sig. dig.
Term
When do you use the Atlantic rule?
Definition
When there is no decimal point.
Term
What is the Atlantic rule?
Definition
You start on the right of the number, and once you reach the first non-zero you count it and everything after it as a sig. dig.
Term
How man Sig. Dig.'s are in 1,000.8?
Definition
5 sig. dig.'s
Term
How many Sig. Dig.'s are in 80?
Definition
1 Sig. Dig.
Term
How many Sig. Dig.'s are in .00260?
Definition
3 Sig. Dig.'s
Term
How many Sig. Dig.'s are in 25,000?
Definition
2 Sig. Dig.'s
Term
How many Sig. Dig.'s are in 4,020?
Definition
3 Sig. Dig.'s
Term
How many Sig. Dig.'s are in 4.080?
Definition
4 Sig. Dig.'s
Term
What is the rule when multiplying and dividing with Sig. Dig.'s?
Definition
When you multiply you are only allowed to keep the smallest # of sig. dig.'s present in one of the numbers being multiplied or divided.
Term
What is the rule when adding or sbtracting with Sig. Dig.'s?
Definition
When adding or subtracting Sig. Digs. You use the number of sig. digs. to the right of the decimal. Line up and then + or - and cut of the extra. (Do math first; round last.)
Term
What is the product of 4.080*2.0?
Definition
8.2 +/- .1
Term
Write 156.90 in proper scientific notation.
Definition
1.569*10^2
Term
Write 0.00089 in proper scientific notation.
Definition
8.9*10^-4
Term
Expand 1.23*10^6 into ordinary notation.
Definition
1,230,000
Term
Expand 9.09*10^-5 into ordinary notation.
Definition
.0000909
Term
What is the equation for velocity?
Definition
Displacement/Time
Term
What is the equation for speed?
Definition
Distance Travled/Time elapsed
Term
Is velocity vector or scaler?
Definition
Vector
Term
Is speed a vector or scaler?
Definition
scaler?
Term
What is aceleration?
Definition
A change in velocity. (Speed up, slow down, turning).
Term
What is the equation for acceleration?
Definition
(Vf - Vo)/(T)
Term
What are the three kinematic equations?
Definition
Delta X = Vot + 1/2 at^2

Vf = Vo + at

Vf^2 = Vo^2 + 2a Delta X
Term
When do you use the kinematic equations?
Definition
When the acceleration is constant.
Term
What is the acceleration of gravity?
Definition
- 9.8 m/s^2
Term
What is pythagorean's theorum?
Definition
a^2 + b^2 = c^2
Term
What does SOHCAHTOA stand for?
Definition
Sin 0 = Opposite/Hypotenuse
Cos 0 = Adjacent/Hypotenuse
Tan 0 = Opposite/Adjacent
Term
What is a component?
Definition
The part of a vector that runs parrallel to an axis.
Term
How do you find the horizontal component?
Definition
VX = V Cos Theda
Term
How do you find the vertical component?
Definition
Vy = V Sin theda
Term
In projectile motion what stays the same the whole time?
Definition
Acceleration. ax = 0 ay = -9.8 m/s^2
Term
What is the Net Force?
Definition
The sum of all forces.
Term
What is Newton's First Law of Motion?
Definition
The Law of Inertia - If there is no EF acting on an object, then it will not accelerate (speed up, slow down, turn).
Term
What is Newton's Second Law?
Definition
EF = ma
Net Force = (mass)(acceleration)
Term
What is Newton's Third Law of Motion?
Definition
If an object exerts a force on a second object, then the second object exerts a force back on the first object. The forces are equal in magnitude, but opposite in direction.
Term
What is mass?
Definition
Measure of Inertia. (Kg)
Term
What is weight?
Definition
A force of gravity on an object down. w=mg Weight = (Mass)(Gravity)
Term
When you have a frictionless ramp, what is the force going into the ramp?
Definition
mg Cos Theda
Term
When you have a frictionless ramp, what is the force going down the ramp?
Definition
mg Sin Theda
Term
What is friction?
Definition
Two forces that oppose the sliding of two objects past eachother.
Term
How many types of friction are there and what are they?
Definition
2 - Static and Kinetic.
Term
What kind of friction do you use if you want to get something started?
Definition
Static Friction.
Term
What kind of friction do you use if you want to keep an object moving?
Definition
Kinetic Friction.
Term
What is the coefficient of friction?
Definition
The slickness of it.
Term
What is the equation for Static Friction?
Definition
Ffr
Term
What is us?
Definition
The Coefficient of static friction.
Term
What is the equation for Kinetic Friction?
Definition
Ffr = ukFN
Term
What is uk?
Definition
The coefficient of kinetic friction.
Term
If you want to accelerate, what equation do you use?
Definition
EF = ma.........F-Fr=ma
Term
What equation do you use to find the force of gravity?
Definition
FG = (Gm1m2)/(r^2)
Term
What does FG stand for?
Definition
The attraction between two object.
Term
What does G stand for?
Definition
Universal Gravitational Constant.
Term
What is the Universal Gravitational Constant?
Definition
6.67 * 10^-11 N
Term
What happens if you doube the mass?
Definition
The force doubles.
Term
What happens if you doubble both the mass and the radius?
Definition
Quadruptle the force.
Term
What is Uniform Circular Motion?
Definition
Motion in a circle at a constant speed.
Term
What is the equation for Centripetal Acceleration (ac)?
Definition
(V^2)/(r)
Term
What is the equation for Centripetal Force?
Definition
FC = m (V^2/r)
Term
How do you find the circumphrence of a circle?
Definition
2 pi r
Term
m = 2,000 kg; r = 10 m; V = 10 m/s; What is the EF?
Definition
2,000 (102/10) = 20,000
Term
The slowest you can go on a loop the loop is represented by what equation?
Definition
V = (square root of:) rg
Term
The maximum "safe speed" you can go while making a turn is represented by what equation?
Definition
V = (square root of:) usrg
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