Unit 3 Lesson 8 Kinetic Energy

If their speed was the same, which of the following would you expect to have more kinetic energy?

• A. marble

• B. baseball

• C. golf ball

• D. ping pong ball

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How does an increase in mass affect an objects kinetic energy?

• A. A decrease in mass causes an increase in kinetic energy

• B. An increase in mass causes a decrease in kinetic energy.

• C. An increase in mass causes an increase in kinetic energy.

• :D. Kinetic energy and mass are not related.

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What tool can scientists use to demonstrate the relationship between mass and kinetic energy?

• A. Scientists can use a scale.

• B. Scientists can use a line graph.

• C. Scientists can use an accelerometer.

• D. Scientists can use kinetic measuring tape.

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A proportional relationship describes Text to speech

• A. a ratio that is always the same between two variables.

• B. a way to connect two seemingly unrelated variables.

• C. a relationship that shows how two objects grow over time.

• D. a relationship in which two variables are always equal to each other.

How would the kinetic energy of a 10 kg rock compare to a 20 kg rock if all other factors stay the same?

• A. The 20 kg rock has half the mass of the 10 kg rock.

• B. The 20 kg rock has half the kinetic energy as the 10 kg rock.

• C. The 20 kg rock and the 10 kg rock have the same kinetic energy.

• D. The 20 kg rock has two times as much kinetic energy as the 10 kg rock.

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A linear relationship is demonstrated by

• A. a curved line on a graph

• B. a straight line on a graph.

• C. the number of arrows on a diagram.

• D. The spaces between arrows in a field diagram.

The steepness of a line on a graph is called its _________.

• A. axis

• B. force field

• C. slope

• D. value

Which of the following slopes would appear to be steeper on a graph?

• A. 0 m/s

• B. 2 m/s

• C. 5 m/s

• D. 10 m/s

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An increase in speed likely means that an object’s

• A. mass increases.

• B. mass decreases.

• C. kinetic energy increases.

• D. kinetic energy decreases.

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A graph of kinetic energy compared to speed demonstrates

• A. an inverse slope.

• B. a linear relationship.

• C. a constant relationship.

• D. a nonlinear relationship.

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