1. Fill in the blanks with the correct answers.
a) Work is the product of force and displacement in the direction of the force.
b) The S.I. unit for work is Joule (J).
c) When force of 1 newton is used to move an object for a distance of 1 metre in the direction of force, work of 1 joule is done.
d) Energy is the ability to do work.
e) When 1 joule of 1 joule is done in 1 second, power of 1 watt has been used.
f) The S.I. unit for power is Watt (W).
2. Choose the correct answer.
a) The amount of work done is equal to the amount of energy used.
b) Power is the rate of doing work.
c) The greater the work done, the greater the power needed.
d) The two factors that affect the amount of work done are force and displacement.
3. Diagram below shows a few activities. State whether the work is done or work not done.
a) Work is done.
b) Work is not done.
c) Work is not done.
d) Work is done.
Parent Tip: Review the logic above to help your child master the concept of work force and power worksheet.
