Force,work and power Flashcards
1
Q
Push, pull, weight and friction
A
Are all examples of forces
2
Q
Forces are measured
A
Using a spring balance
3
Q
Force
A
Is anything which causes an object to move or change its velocity
4
Q
Friction
A
Is a force which prevents easy movement between two objects in contact
5
Q
Weight
A
Of an object 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 (force) attached to it.
7
Q
A graph of spring extension against the weight to it gives a straight line through the origin (0,0)
A
(Force) attached to it gives a straight line through the origin (0,0)
8
Q
Energy
A
Pis the ability to do work
9
Q
Work
A
Is done when a force moves an object
Work(J) =force(N) x distance(m)
10
Q
Power
A
Is the rate at which work is done
Power is the amount of work done in one second
Power=work done (J)
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Time taken(S)
