Exploring Forces and Energies

What is a force?

• A force is a fixed quantity that cannot change.

• A force is a measurement of speed.

• A force is a type of energy.

• A force is an interaction that causes a change in motion.

Name two types of forces.

• Nuclear force

• Magnetic force

• Centrifugal force

• Gravitational force, Frictional force

What is gravity?

• Gravity is the temperature of an object in space.

• Gravity is the force of attraction between objects with mass.

• Gravity is a type of energy produced by motion.

• Gravity is the speed at which objects fall.

Define potential energy.

• Potential energy is the energy of motion.

• Potential energy is the energy associated with temperature.

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

• Potential energy is the energy released during a chemical reaction.

What is kinetic energy?

• Kinetic energy is the energy of an object due to its temperature.

• Kinetic energy is the energy stored in an object at rest.

• Kinetic energy is the energy released during a chemical reaction.

• Kinetic energy is the energy of an object in motion.

How does height affect potential energy?

• Height directly affects potential energy; higher height results in greater potential energy.

• Height has no effect on potential energy.

• Potential energy is only affected by mass, not height.

• Potential energy decreases with increased height.

Give an example of a contact force.

• Magnetism

• Gravity

• Tension

• Friction

What happens to kinetic energy when an object slows down?

• Kinetic energy increases.

• Kinetic energy remains constant.

• Kinetic energy is converted to potential energy.

• Kinetic energy decreases.

What is the formula for calculating kinetic energy?

• KE = m * v

• KE = 0.5 * m * v^2

• KE = 0.5 * m * v

• KE = m * v^2 / 2

How can energy be transformed from potential to kinetic?

• Energy remains constant and does not change forms during motion.

• Energy is transformed from kinetic to potential when an object is lifted.

• Energy is transformed from potential to kinetic when an object is set into motion.

• Energy is transformed from potential to kinetic only in a vacuum.