Forces Flashcards
What are 4 examples of a vector quantity:
1.
2.
3.
4.
- Force.
- Displacement.
- Acceleration.
- Momentum.
What is the resultant force?
The single force that has the same effect as all the forces acting on an object.
When can the resultant force be 0N?
If all the forces are balanced.
What is work done?
When an object transfers energy.
Work is also done when a ________ causes an object to _______.
force
move
When work is done against ___________________ acting on an object, the object’s ___________________________.
frictional forces
temperature increases
What is power?
Amount of work done in a given time.
What is the equation for work done?
Work done= force x distance
What is the unit for work done?
Joules.
What is the equation for power?
Power= work done/ time
All moving objects have _________ ________ and ________.
kinetic energy
momentum
What is conservation of momentum?
When in a closed system, the total momentum before an event and the total momentum after an event are the same.
One joule of work is done when a force of ____ causes a movement of ____.
1N
1m
In free body diagrams, the arrow shows the ________________________.
magnitude of the force
What is the standard shape of a free-body diagram?
A shape.
