Energy and Work - JSS2 Basic technology Past Questions and Answers - page 1
What is energy?
The ability to cause motion
The ability to do work
The force applied to an object
The rate at which work is done
Which of the following is NOT a form of energy?
Kinetic energy
Potential energy
Thermal energy
Frictional energy
What is the formula for kinetic energy?
KE = mv
KE = 1/2 mv²
KE = mgh
KE = Fd
Gravitational potential energy is given by which formula?
PE = 1/2 mv²
PE = Fd
PE = mgh
PE = ma
Thermal energy is related to:
The potential energy in chemical bonds
The temperature of an object
The speed of an object
The height of an object above the ground
Which form of energy is stored in the bonds of chemical compounds?
Nuclear energy
Kinetic energy
Thermal energy
Chemical energy
Work is done when:
A force is applied but there is no movement
A force causes an object to move
An object is stationary
Energy is conserved
What is the formula for work?
W = 1/2 mv²
W = mgh
W = Fd
W = ma
How are energy and work related?
Energy is the rate at which work is done
Work is the transfer of energy
Energy is force times distance
Work is force per unit area
Which of the following activities involves converting chemical energy into kinetic energy?
Boiling water in a kettle
Lifting a weight
Powering a car engine
Stretching a spring
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