Energy: Kinetic and Potential

What is the formula for calculating kinetic energy?

• KE = m / v

• KE = 0.5 * m + v

• KE = 0.5 * m * v^2

• KE = m * v^2

Give an example of an object with high potential energy.

• dropped book

• deflated balloon

• stretched rubber band

• compressed spring

Explain the relationship between kinetic and potential energy.

• Potential energy is always greater than kinetic energy

• Kinetic energy is not affected by the mass of an object

• Kinetic energy is only present in stationary objects

• The relationship between kinetic and potential energy is that they are interconvertible forms of energy, where an increase in one leads to a decrease in the other.

How does the height of an object affect its potential energy?

• The height of an object has no effect on its potential energy

• The height of an object affects its potential energy by increasing it as the height increases.

• The height of an object decreases its potential energy

• The height of an object makes its potential energy negative

What is the unit of measurement for energy?

• Joule (J)

• Volt (V)

• Newton (N)

• Watt (W)

Describe the concept of mechanical energy.

• Mechanical energy is the heat generated by friction.

• Mechanical energy is the force exerted by machines.

• Mechanical energy is the sum of potential energy and kinetic energy in a system.

• Mechanical energy is the light produced by moving objects.

What happens to the total energy of a system when work is done on it?

• The total energy of the system remains constant.

• The total energy of the system increases.

• The total energy of the system becomes negative.

• The total energy of the system decreases.

Compare and contrast kinetic and potential energy.

• Kinetic energy is measured in volts, while potential energy is measured in meters.

• Kinetic energy is only applicable to stationary objects, while potential energy is only applicable to moving objects.

• Kinetic energy is the energy of motion, while potential energy is the energy stored in an object due to its position or state.

• Kinetic energy is the energy stored in an object, while potential energy is the energy of motion.

Discuss the principle of conservation of energy.

• Energy can be destroyed but not created

• Energy can be created but not transformed

• Energy can neither be created nor destroyed, only transformed.

• Energy conservation only applies to mechanical systems

Provide an example of energy transformation between kinetic and potential energy.

• Jumping on a trampoline

• Swinging on a swing

• Rolling a car downhill

• Throwing a ball upwards