08 Forces and Momentum

What is gravity?

• a contact force

• a frictional force

• a magnetic force

• a noncontact force

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All momentum depends on what two factors?

• Weight and Speed

• Weight and Height

• Speed and Gravity

• The force between two charged particles

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Melanie watched the path a baseball followed after a pitcher threw it. She noticed that the ball traveled horizontally away from the pitcher as well as downward toward the ground. What force caused the ball to accelerate in the downward direction when it was thrown?

• applied force

• air resistance

• electrical force

• gravitational force

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A heavier object will have _______________momentum?

• Less

• More

• The Same

• Zero

Which is not a factor that affects soap box derby racing

• Gravity

• Momentum

• Aerodynamics

• Age of driver

True or false - an object at rest still has momentum.

• True

• False

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Rockets move because of the momentum of their_____________?

• Passengers

• Wings

• Parachute

• Fuel

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The demonstration in the video using a tennis ball and a basketball was demonstrating the ________________ of momentum.

• Increase

• Decrease

• Transfer

• Conservation

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A ball that breaks into pieces has the same momentum as a ball that bounces. This is called the _________________ of momentum

• Transfer

• Conservation

• Elimination

• Transubstantiation

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According to the reading lesson, this is a push or pull exerted on an object.

• Pressure

• Influence

• Demand

• Force

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