6H UNIT 6

The energy related to the motion of an object is called —

• potential energy

• kinetic energy

• electrical energy

• chemical energy

According to the above diagram, at what point would the roller coaster car have the greatest kinetic energy?

• A. 3

• B. 4

• C. 5

Which statement BEST describes the kinetic and potential energies of the cart at Location X compared with the kinetic and potential energies of the cart at Location Y?

• The cart has more potential energy and less kinetic energy at Location X than it has at Location Y.

• The cart has less potential energy and more kinetic energy at Location X than it has at Location Y.

• The cart has the same amounts of potential energy and kinetic energy at Location X as it has at Location Y.

• The cart has more potential energy and kinetic energy at Location X than it has at Location Y.

Which table best compares the amounts of potential energy and kinetic energy of the snowboarder at each position?

• Position 1: There is less potential energy than kinetic energy. Position 2: The potential energy is equal to the kinetic energy. Position 3: The potential energy is equal to the kinetic energy.

• Position 1: There is less potential energy than kinetic energy. Position 2: There is less potential energy than kinetic energy. Position 3: There is more potential energy than kinetic energy.

• Position 1: There is more potential energy than kinetic energy. Position 2: The potential energy is equal to the kinetic energy.

The picture shows a bicyclist increasing speed while riding down a hill during a bicycle race. Which statements accurately describe the potential and kinetic energy of this bicyclist?

• A) Kinetic energy increases. Potential energy decreases.

• B) Kinetic energy increases. Potential energy remains constant.

• C) Kinetic energy remains constant.

A demonstration helps students understand a principle of roller coaster design. Which answer choice correctly describes the ball’s kinetic and potential energy?

• The ball has more potential energy at position X than at position Z.

• The ball has more kinetic energy at position Y than at position W.

• The potential energy and kinetic energy of the ball are equal at position X.

• The potential energy and kinetic energy of the ball are greatest at position Z.

Which of these correctly describes the potential energy and the kinetic energy of the bicycle rider?

• A) When the rider is at the top of the hill, her potential energy is the greatest, and her kinetic energy is the least.

• B) As the rider moves up the hill, her kinetic energy increases, and her potential energy decreases.

• C) When the rider goes down the hill, her potential energy increases, and her kinetic energy decreases.

• D) As the rider reaches the bottom of the hill, her kinetic energy and her potential energy decrease.

The drawing shows two identical airplanes at an air show. The airplanes are flying at the same speed. Airplane W is flying 50 m higher than Airplane X. What is the difference in potential energy between the two airplanes?

• Airplane W has more potential energy than Airplane X.

• Airplane X has more potential energy than Airplane W.

• Both airplanes have the same potential energy.

• Potential energy cannot be determined.

Which statement best describes the energy of the two airplanes?

• Airplane W has a greater kinetic energy than Airplane X.

• The two airplanes have the same gravitational potential energy but different kinetic energies.

• Airplane X has more gravitational potential energy than Airplane W.

• The two airplanes have the same kinetic energy but different gravitational potential energies.

A student drops a super bouncy ball from their hand. Identify points of greatest and least kinetic energy.

• Greatest kinetic energy at the lowest point, least at the highest point

• Greatest kinetic energy at the highest point, least at the lowest point

• Kinetic energy is constant throughout

• Kinetic energy is greatest at the midpoint