Force Work Power Flashcards
1
Q
Force
A
Anything which causes an object to move or change velocity
2
Q
Examples of forces
A
Push, pull, weight, friction
3
Q
Force is measured
A
Using a spring balance
4
Q
Friction
A
A force which prevents easy movement between two objects in contact
5
Q
Weight
A
Is the force of gravity acting on it
6
Q
Hooke’s law
A
States that the extension of a spring depends on the size of the weight attached to it
7
Q
A graph of spring extension against the weight
A
Gives a straight line throught the origin (0,0)
8
Q
Energy
A
The ability to do work
9
Q
Work
A
When a force moves an objects
Work(J)=Force(N) x Distance (m)
10
Q
Power
A
The rate at which work is done
Pwer is the amount of work done in 1 second
Power=work done (j)/time taken
