Work and Power

Work is done ___________

• only when force is applied

  on an object

  cause the object to move

  into the opposite direction

  as applied force.

• only when force is applied

  on an object

  cause the object to move

  into the same direction

  as applied force.

Formula of work:

• W = F x t

• W = F + t

• W = F / d

• W = F x d

There are two condition of work to be done....

• Constant applied force on the object

• Object travel a distance in the same direction of force

• Both

Tags

NGSS.HS-PS2-1

The Unit of force is ______________

• Kilogram (kg)

• Newton(N)

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The unit of distance is ___________

• meter (m)

• centimeter (cm)

• millimeter (mm)

Units of work is ___________

• Newton (N)

• watt (w)

• joule (J)

Power is ___________

• Is the rate of energy transfer.

• Speed of doing work is work done in a certain time.

• both

• none

Power =

• Work + time

• Work / time

• Work x time

Time is measured in ______________

• minutes (min)

• hours (hrs)

• seconds (s)

Unit of power is:

• Meters (m)

• Watt (W)

• Joules (J)