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Force, Work, Power

QuestionAnswer
What is a force? is anything which causes an object to move or change in velocity.
What is unit for force? Newtons (N)
List 6 different types of forces push, pull, friction, gravity, electric, mangetic
For every force there is a______ equal and opposite force
What happens when forces are equal? No movement occurs. The forces are balanced/in equilibrium
What is the name of the state when opposing forces are balanced? Equilibrium
Define friction A force that opposes the sliding motion of an object when in contact with another object
Getting blisters from our shoes is an examples of what? a disadvantage of friction
Define lubrication Reduces the friction between two surfaces in contact
Give an example of a lubricant? Oil
How do you calculate work? Work = Force X Distance
What is the unit for work? Joules
A woman stands holding a box. Is she doing work? Why? No. She is applying a force on the box but she is not moving therefore she is not working
Define Power the rate at which work is done
What is the unit for Power? Watts
How do you calculate power? Power = Work done รท time taken
Created by: aileenwa
 

 



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