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AP Physics Semester 1

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Section 1

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newton's second law of motion

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Mar 1, 2020

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Section 1

(25 cards)

newton's second law of motion

Front

The acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object.

Back

velocity

Front

the rate of change of displacement

Back

motion

Front

change in position

Back

equation 1 for kinematics

Front

v = x-xo / t

Back

acceleration

Front

The rate at which velocity changes

Back

applied

Front

a force applied externally ( pulling force, pushing, engine force

Back

velocity-time graph

Front

a graph that can be used to plot the velocity of an object versus time and to determine the sign of an object's acceleration

Back

equation 2 for kinematics

Front

a = vx-vxo / t

Back

weight

Front

w=mg ; always acts downwards

Back

friction

Front

when an object touches a surface, friction acts in the opp. direction to the velocity. static friction increases to balance out applied force to a MAX kinetic friction is constant, less than max static friction

Back

scalar

Front

A physical quantity that has magnitude (size) only.

Back

EQUATION 3 FOR KINEMATICS

Front

x - xo = 1/2 (vxo + vx) • t

Back

newton's first law of motion

Front

the scientific law that states that an object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction UNLESS ACTED UPON BY AN OUTSIDE FORCE

Back

spring

Front

obey's Hooke's Law; force is directly proportional to extension ; f=kx

Back

normal reaction/force

Front

always perpendicular to surface, and balances out any other forces

Back

displacement

Front

the change in position of an object

Back

drag

Front

air or water resistance that acts in the opp. direction to an object's velocity

Back

equation 4 for kinematics

Front

vx^2 = vxo^2 + 2a (x-xo)

Back

vector

Front

A quantity that has magnitude (size) and direction

Back

tension

Front

acts along a string in both directions, pulling inwards; CONSTANT THROUGHOUT STRING

Back

equation 5 for kinematics

Front

x = xo + vxo•t + 1/2•a•t^2

Back

position-time graph

Front

a graph with time data on the horizontal axis and position data on the vertical axis

Back

newton's third law of motion

Front

if object A exerts a force on object B, then B must exert a force of equal magnitude and opposite direction back on A. every action must have an equal and opposite reaction

Back

distance

Front

The length of a path between two points

Back

speed

Front

the rate of change of distance

Back