Potential and Kinetic Energy

What is Potential Energy (PE)?

• The energy of an object in motion.

• The energy stored in an object due to its position or state.

• The energy released during a chemical reaction.

• The energy associated with the temperature of an object.

How is energy conserved in a pendulum?

• Energy is lost as heat due to friction.

• Energy is conserved as it transforms between potential energy at the highest points and kinetic energy at the lowest point.

• Energy is only conserved at the lowest point of the swing.

• Energy is converted into sound energy during the swing.

What is Kinetic Energy (KE)?

• The energy of an object at rest.

• The energy of an object in motion.

• The energy stored in an object due to its position.

• The energy released during a chemical reaction.

At which point is kinetic energy greatest in a roller coaster ride?

• At the highest point of the ride, where potential energy is maximum.

• At the lowest point of the ride, where the speed is highest.

• At the midpoint of the ride, where speed is moderate.

• At the starting point of the ride, just before the first drop.

What is the relationship between mass and kinetic energy?

• Kinetic energy decreases with mass; the heavier object has less kinetic energy.

• Kinetic energy is independent of mass; both objects have the same kinetic energy.

• Kinetic energy increases with mass; if two objects are moving at the same speed, the heavier object has more kinetic energy.

• Kinetic energy is only dependent on speed, not mass.

What is the formula for calculating potential energy?

• PE = mv^2

• PE = mgh

• PE = 1/2 mv^2

• PE = mg^2

What happens to the energy of a ball thrown into the air at its highest point?

• The ball has maximum kinetic energy and minimum potential energy.

• The ball has equal potential and kinetic energy.

• At its highest point, the ball has maximum potential energy and minimum kinetic energy.

• The ball has no energy at its highest point.

What happens to potential energy as an object falls?

• It remains constant throughout the fall.

• It increases while kinetic energy decreases.

• It decreases while kinetic energy increases.

• It is converted entirely into thermal energy.

What is the formula for calculating kinetic energy?

• KE = mv

• KE = 1/2 mv²

• KE = mgh

• KE = 1/2 mv

Give an example of an object with potential energy.

• A book on a shelf

• A running car

• A flying airplane

• A swimming fish