Energy Conceptual Summative

As a ball falls freely (without friction) toward the ground, its total mechanical energy

• increases
• decreases
• remains the same
• cannot be determined

The diagram below shows an ideal simple pendulum. As the pendulum swings from position A to position B, what happens to its potential energy? [Neglect friction.]

• it decreases
• it increases
• it remains the same
• it is zero

Tags

NGSS.MS-PS3-2

The diagram below shows an ideal simple pendulum. As the pendulum swings from position A to position B, what happens to its kinetic energy? [Neglect friction.]

• it decreases
• it increases
• it remains the same
• it is zero

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The diagram below shows three positions, A, B, and C, in the swing of a pendulum, released from rest at point A. [Neglect friction.] Which statement is true about this swinging pendulum? 

• The potential energy at A equals the potential energy at B
• The potential energy at B equals the potential energy at C
• The speed of the pendulum at A equals the speed of the pendulum at B
• The potential energy at A equals the potential energy at C.

Tags

NGSS.HS-PS3-2

A student throws a stone upward at an angle of 45 degrees. Which statement best describes the stone at the highest point that it reaches? 

• Its kinetic energy is at a minimum
• Its potential energy is at a minimum
• Its acceleration is at a maximum
• Its elastic energy is at a maximum

A car travels at constant speed v up a hill from point A to point B, as shown in the diagram below. As the car travels from A to B, its gravitational potential energy 

• remains the same and its kinetic energy remains the same
• increases and its kinetic energy decreases
• increases and its kinetic energy remains the same
• remains the same and its kinetic energy decreases

Two students of equal weight go from the first floor to the second floor. The first student uses an elevator and the second student walks up a flight of stairs. Compared to the gravitational potential energy gained by the first student, the gravitational potential energy gained by the second student is

• less
• greater
• the same
• cannot be determined

The graph below shows elongation as a function of the applied force for two springs, A and B. Compared to the spring constant for spring A, the spring constant for spring B is

• the same
• greater
• smaller
• cannot be determined

As a spring is stretched, its elastic potential energy

• remains the same
• increases
• decreases
• cannot be determined

As a spring is stretched, its spring constant

• remains the same
• increases
• decreases
• cannot be determined