Vocabulary
Force acts on an object to move it a distance
Work
Two students who are similar in size walk up the same set of stairs. They are doing _________________ amount of work.
the same!
The two factors of power are work and ________________.
time.
The units of power
watts
Work = ____________________ x ___________________
FORCE DISTANCE
Power is measured in _____________________.
watts.
The units of force
newtons (N)
Is holding a stack of books does work or not?
No
The _________________ amount of time it takes to do the same work, the more power is produced.
shorter
The units of work
Joules (J)
Pushing against a wall is an example of doing work. True/False?
False - not moving over a distance, no work done!
Two cars that weigh the same race up the hill. Car 1 gets there twice as fast as Car 2. Which car had more power?
car 1. It does the same work but in half of the time
The amount of work is performed in one unit of time
Power
A monster truck and a golf cart climb up the same hill. Which one does more work?
The monster truck - because it weighs more --> need requires stronger force!
Power = ___________________/ ___________________
WORK TIME