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5 ATHENA ch 13 Scott Foresman 2008

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term
definition
velocity   the speed and direction of an object's motion  
force   a push or pull that acts on an object  
work   energy used when a force moves an object  
power   the rate at which work is done  
equilibrium   the state in which the net force is zero  
inertia   the tendency of an object to resist a change in motion  
acceleration   the rate at which the velocity of an object changes over time  
machine   a device that changes the direction or the amount of effort needed to do work  


   


 

 

 

 

 

 
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