Force, Work and Energy

What are the main forms of energy?

• Mechanical energy, magnetic energy, gravitational energy

• Kinetic energy, static energy, dynamic energy

• Solar energy, wind energy, hydraulic energy

• Kinetic energy, potential energy, thermal energy, chemical energy, electrical energy, nuclear energy

Can you name three sources of renewable energy?

• Solar, wind, and hydroelectric power

• Coal, oil, and natural gas

• Nuclear, geothermal, and biomass

• Fossil fuels, nuclear, and coal

What is potential energy?

• The energy that an object possesses due to its speed

• The energy that an object possesses due to its temperature

• The energy that an object possesses due to its position or state.

• The energy that an object possesses due to its mass

What is the formula to calculate kinetic energy?

• mass * velocity squared

• 2 * mass * velocity squared

• 1/4 * mass * velocity squared

• 1/2 * mass * velocity squared

What is force and how is it measured?

• The force is atmospheric pressure and is measured in meters

• The force is the temperature of a body and is measured in joules

• The force is the speed of an object and is measured in kilograms

• The force is the intensity of energy exchange between two bodies or systems, and is measured in newtons (N).

Define work in terms of energy and force.

• Work is the force applied to an object without transfer of energy

• Work is defined as the energy transferred to an object by the application of a force over a distance.

• Work is the energy transferred to an object by the application of a force at rest

• Work is the energy transferred to an object by the application of a force perpendicular to the distance

Can you name three simple machines and explain how they work?

• Plane, car, bicycle

• Computer, phone, television

• Hammer, screwdriver, saw

• Lever, pulley, inclined plane

What is the difference between potential energy and kinetic energy?

• Potential energy and kinetic energy are the same, just given different names.

• Potential energy is the energy an object has due to its position or state, while kinetic energy is the energy associated with the movement of an object.

• Potential energy is the energy stored in an object due to its position or state, while kinetic energy is the energy associated with the movement of an object.

• Potential energy is the energy associated with the movement of an object, while kinetic energy is the energy stored in an object due to its position or state.

How can energy be converted from one type to another?

• Using the force of gravity

• Through the evaporation of water

• Through energy transformation processes.

• By combustion of materials

Why is it important to use renewable energy sources?

• Because renewable energy sources are more expensive.

• To reduce environmental impact and dependence on fossil fuels.

• To increase dependence on fossil fuels.

• To increase environmental impact.