Work, Energy and Power - JSS2 Basic science Past Questions and Answers - page 1
What is work?
The ability to do work
The rate of doing work
When a force moves an object over a distance
The energy of motion
Which of the following is an example of potential energy?
A moving car
A stretched rubber band
A flying bird
A spinning top
What is power?
The ability to do work
The rate of doing work
The energy of motion
The stored energy in an object
Which equation represents work?
W = F + d
W = F × d
W = F ÷ d
W = F - d
When a force is applied to an object but it does not move, what happens?
Work is done
No work is done
Energy is transferred
Potential energy increases
Which form of energy is associated with motion?
Potential energy
Kinetic energy
Thermal energy
Chemical energy
What does the term "power" measure?
Ability to lift heavy objects
Rate of doing work
Stored energy in an object
Energy conversion
If you exert a force on an object but it does not move, what is the work done?
Zero
Positive
Negative
Infinite
Which of the following is an example of kinetic energy?
A stretched spring
Water stored in a dam
A moving car
A battery-powered flashlight
What is the formula for calculating power?
P = W × t
P = W + t
P = W ÷ t
P = W - t