8.1 Work and Power

    Cards (56)

    • What is the definition of work in physics?
      Energy transfer by force
    • What is the formula for calculating power?
      Power = Work / Time
    • Force is measured in newtons (N).

      True
    • What happens to work done if force and displacement are in opposite directions?
      Work done is negative
    • What three variables are used in the work formula?
      Work, force, displacement
    • Work is the energy transferred when a force causes movement.

      True
    • The formula for work is Work = Force \times Displacement
    • If a force of 50 N is applied to an object and it moves 4 m in the direction of the force, the work done is 200 J
    • What unit is used to measure power?
      Watts (W)
    • Match the concept with its description:
      Power ↔️ Rate at which work is done
      Work ↔️ Energy transferred by a force
      Time ↔️ Duration over which work is done
    • What is the unit of measurement for force?
      Newtons
    • What variable is measured in meters when calculating work?
      Displacement
    • What is the unit of measurement for force?
      Newtons
    • What is the unit of measurement for power?
      Watts
    • What is the formula for power?
      Power=Power =WorkTime \frac{Work}{Time}
    • Power is measured in watts (W).
      True
    • Work is measured in joules (J).
      True
    • If a force of 50 N is applied to an object and it moves 4 m, what is the work done?
      200 joules
    • Power is measured in watts (W).
      True
    • What unit is used to measure work?
      Joules
    • The amount of work done depends on the force applied and the distance the object moves in the direction of the force.
    • To calculate work, you need to know the force in newtons and the displacement in meters.
    • What unit is used to measure force?
      Newtons
    • What are the two factors that determine the work done on an object?
      Force and displacement
    • If the force and displacement are in opposite directions, the work done is negative.

      True
    • The formula for power is Power = \frac{Work}{Time}
    • If 100 joules of work is done in 5 seconds, the power is 20 W
    • What is the unit of measurement for work?
      Joules
    • If a force of 50 N is applied to an object and it moves 4 m in the direction of the force, the work done is 200 joules.
    • If a force of 50 N is applied to an object and it moves 4 m in the direction of the force, the work done is 200 joules.
    • If a force of 50 N is applied to an object and it moves 4 m in the direction of the force, the work done is 200 joules.
    • If a force of 50 N is applied to an object and it moves 4 m in the direction of the force, the work done is 200 joules.
    • If 100 joules of work is done in 5 seconds, the power is 20 watts.
    • The power is the rate at which work is done or energy is transferred
    • If 100 joules of work is done in 5 seconds, what is the power?
      20 watts
    • Force is measured in newtons
    • Work is measured in joules
    • The formula to calculate work is Force times displacement.
    • Work is the transfer of energy when a force causes an object to move.
    • Match the concept with its description and units:
      Work ↔️ Energy transfer by force, joules (J)
      Force ↔️ The push or pull applied, newtons (N)
      Distance ↔️ The length of movement, meters (m)