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Physics Review

Expression for velocity. v=x/t
Expression for acceleration. a=v/t
Value for the acceleration of objects in free fall. 9.8 meters per second squared
Physical quantity that has both a magnitude and direction. vector
If a certain car is traveling down the road at a certain velocity and then slows down to travel only half as fast as before. What fraction would this be of the original velocity? 1/2
Coordinate system for specifying the precise location of objects in space. frame of reference
Cause of acceleration or a change in an object's motion. force
Forces that exist between objects even in the absence of direct physical contact. field force
Tendency of an object to maintain its state of motion. inertia
Newton's Second Law of Motion F=ma
Simultaneous equal but opposite forces resulting from the interaction of two objects. action-reaction pairs
Formula for work. W=Fx
Work is done when displacement is not zero.
Form of energy associated with an object in motion. kinetic energy
Form of energy associated with an object due to its position. potential energy
Equations for power. P=F d/t or P=Fv or P=W/t
Equation for momentum. p=mv
Forces that exist between objects in direct contact. contact forces
A large constant force acting over a long time interval causes a large change in momentum. Ft=p
Two objects move separately after colliding, and both the total momentum and total kinetic energy remain constant. elastic collision
Two objects move together after colliding, and and kinetic energy is not conserved. inelastic collision
Angles equals 2 pi rad 360 degrees
One radian equals 57.3 degrees
Quantity that measures the ability of a force to rotate or accelerate an object around an axis. torque
Farther the force is from the axis of rotation more torque produced
Newton's second law for rotating objects net torque = moment of inertia x angular acceleration
Time it takes to complete a cycle of motion period
Relation of frequency and period in simple harmonic motion inversely related
Phase difference between two waves that are traveling in the same medium when they undergo constructive interference. 0 degrees
How we perceive sound (high or low) depends on the frequency of the sound wave pitch
Number of cycles per unit of time frequency
Repelling force occurs between two charged objects when charges are of like sign.
Attracting force occurs between two charged objects when charges are of unlike signs.
Easily transfers charge conductors
Does not easily transfer charge insulator
Charges on their surface do not move electric insulator
Three resistors connected in series carry currents. I total = I1 = I2 = I3
Three resistors connected in series have voltages. ΔV total = ΔV1 + ΔV2 + ΔV3 +
Three resistors connected in series have resistance. R total = R1 + R2 + R3 +
Three resistors connected in parallel carry currents. I total = I1 + I2 + I3 +
Three resistors connected in parallel have voltages. ΔV total = ΔV1 = ΔV2 = ΔV3
Three resistors connected in parallel have resistance. 1/R total = 1/R1 + 1/R2 + 1/R3 +
Created by: missphysicsteach
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