The Potential for Speed

Which of the following forces is responsible for converting potential energy into kinetic energy for a snowboarder?

• Friction

• Gravitational force

• Magnetic force

• Electrical force

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Which of the following best describes the role of gravity in the snowboarder-Earth system?

• It stores energy as potential energy.

• It converts potential energy to kinetic energy.

• It has no effect on energy.

• It only affects the snowboarder when going uphill.

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Gravity helps snowboarders launch themselves into the air by:

• Increasing their speed as they descend a slope

• Decreasing their weight

• Providing lift like an airplane wing

• Reducing air resistance

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The formula for ____________ is distance/time.

• displacement

• speed

• velocity

• distance

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Which point on the picture does the ball have the least amount of potential energy?

• 1

• 2

• 3

• 4

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Which of the following best describes the relationship between potential energy and speed in a roller coaster?

• Potential energy is converted to speed at the top of the hill.

• Speed is converted to potential energy at the bottom of the hill.

• Potential energy and speed are unrelated.

• Speed is constant regardless of potential energy.

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A car is at the top of a hill with a certain amount of potential energy. As it rolls down, what happens to its speed?

• The speed decreases as potential energy increases.

• The speed increases as potential energy decreases.

• The speed remains constant.

• The speed decreases as potential energy decreases.

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In a pendulum, at which point is the potential energy the highest?

• At the lowest point of the swing.

• At the highest point of the swing.

• In the middle of the swing.

• Potential energy is constant throughout.

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Which scientific principle explains why a diver speeds up as they fall from a diving board?

• Conservation of mass

• Conservation of energy

• Conservation of momentum

• Conservation of charge

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What happens to the speed of a satellite as it moves closer to Earth in its orbit?

• The speed decreases due to increased potential energy.

• The speed increases due to decreased potential energy.

• The speed remains constant.

• The speed decreases due to decreased potential energy.

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