Engineering Energy

What is mechanical energy?

• The energy stored in batteries.

• The energy produced by machines.

• The energy of sound waves.

• The sum of potential energy and kinetic energy in an object.

Explain the concept of potential energy.

• Potential energy is the energy possessed by an object due to its motion.

• Potential energy is the energy possessed by an object due to its position or condition.

• Potential energy is the energy possessed by an object due to its color.

• Potential energy is the energy possessed by an object due to its temperature.

How is potential energy related to height and mass?

• Potential energy is inversely proportional to both height and mass.

• Potential energy is only related to height, not mass.

• Potential energy is directly proportional to both height and mass.

• Potential energy is directly proportional to height but not mass.

What is kinetic energy?

• Energy possessed by an object due to its motion.

• Energy possessed by an object due to its shape.

• Energy possessed by an object due to its temperature.

• Energy possessed by an object due to its position.

Describe the relationship between kinetic energy and velocity.

• Kinetic energy is directly proportional to the square of velocity.

• Kinetic energy is inversely proportional to velocity.

• Kinetic energy is directly proportional to velocity.

• Kinetic energy is independent of velocity.

What is the formula to calculate mechanical energy?

• Kinetic energy + Potential energy

• Kinetic energy / Potential energy

• Kinetic energy * Potential energy

• Kinetic energy - Potential energy

Explain the principle of conservation of mechanical energy.

• The principle of conservation of mechanical energy states that the total mechanical energy of a system increases as external forces act on it.

• The principle of conservation of mechanical energy states that the total mechanical energy of a system decreases as external forces act on it.

• The principle of conservation of mechanical energy states that the total mechanical energy of a system is not affected by external forces acting on it.

• The total mechanical energy of a system remains constant as long as no external forces are acting on it.

Stored energy or energy due to its position is called

• mechanical energy

• potential energy

• kinetic energy

• thermal energy

Which letter shows where is potential energy stored or at its maximum point?

• Y

• W

• X

• Z

Potential energy depends on ______ and _______.

• height, mass

• weight, mass

• speed, mass

• height, speed