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WorksheetsEvaluation: Conservation of Mechanical Energy (Grade 9-STE)
Total questions: 10
Worksheet time: 5mins
What does the law of conservation of mechanical energy state?
Potential energy is always equal to kinetic energy
Potential energy is always converted to kinetic energy
There is always some energy lost as heat
For any system the total amount of mechanical energy remains the same
Which best describes potential energy?
Energy of motion
Energy as heat
Stored energy
Energy that is doing work
Which of the following happens to the energy of a coconut that falls freely?
Loses potential and gains kinetic energy.
Loses both potential and gains kinetic energy.
Gains potential and loses kinetic energy.
Gains both potential and kinetic energy.
Which of the following statements is true?
The principle of the conservation of mechanical energy states that the total mechanical energy in a system remains constant as long as the only forces acting are conservative forces.
Total energy is conserved for every system of particles on which there is an external work done.
Some kinetic energy of an object will not be transformed into potential energy and other forms of energy.
Total energy is not conserved for every system of particles.
The total mechanical energy of the object at the highest point compared to its total mechanical energy at the lowest point is
lesser
greater
equal
not related
Mechanical energy is the sum of Potential and Kinetic Energy.
True
False
Kinetic and Potential energy are the two types of Mechanical Energy.
True
False
Hydropower Energy uses kinetic and potential energy to generate electricity.
True
False
Kinetic Energy is known as “energy in moving matter”
True
False
Kinetic energy cannot to transformed or converted to potential energy.
True
False
