Forces And Their Effects (paper1) Flashcards
What are used instead of machines in many parts of the world
Animals
When is energy transferred
Whenever things happen
When can energy also be transferred
When a force makes something move
What is the energy transferred by a force called
Work done
What does work done depend on
The size of the force and how far the forced moved
What is the work done equation
Work done = force x distance moved in the direction of the force
What is power
The rate at which energy is transferred
What is power measured in
Watts
What does 1 watt equate to
1 joule of work done
What is the power equation
Power = work done divided by time taken
How can objects interact
By exerting forces on one another
What are the forces if the objects are touching
Contact forces
Give an example of a normal contact force
The floor upwards forcing against your weight
What is upthrust balanced by
Gravity
What type of force is gravity
Non-contact force