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Forces and Motion Equations (S=d/t (standard unit for calculating speed…
Forces and Motion Equations
S=d/t
Speed=distance/time
Calculating speed
standard unit for calculating speed m/s
speed=meters/second
a=v final-v initial/t
acceleration=final velocity - initial velocity
calculating acceleration
units for calculating acceleration m/s2
mergers per second squared
F=ma
force equals mass times acceleration
newton
description of relationship of force acceleration and mass
p=mv
momentum=mass * velocity
calculating a objects momentum
P=F/A
explains how pressure depends on force and area
Pressure=forse/area
W=Fd
Work=Force*distance
calculating work
ME=PE+KE
Mechanical Energy= potential Energy+Kinetic Energy
calculating mechanical Energy
KE=1/2mv^2
Calculating Kinetic Energy
Kinetic Energy= 1/2 mass times velocity sq
P=W/t
Calculating Power From Work
Power=Work/time
P=E/t
Calculating Power From Energy
Power=Energy/time
Efficiency (%)=Output Work/Input Work times 100
Calculating efficency of a machine
Mechanical Advantage =Output Force/Input Force
Mechanical Advantage Of a Machine
GPE=mgh
Calculation Gravitational Potential Energy
Gravitational Potential Energy= mass
gravitational acceleration
hight
IMA=Rin/Rout
Ideal Mechanical Advantage=radius of input/Radius of output
MA=Fout/Fin
Calculating a machines mechanical advantage
Mechanical Advantage= Output Force/Input Force
IMA=din/dout
calculating the ideal mechanical advantage of a lever
Ideal Mechanical Advantage=distance from input force to fulcrum/distance from output force to fulcrum
IMA=l/h