Forces and Momentum

A push/pull exerted on an object is called

• Force

• Momentum

• Speed

• Net force

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Are the forces balanced or unbalanced?

• Balanced

• Unbalanced

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Forces have both ________ and direction.

• Magnitude

• Speed

• Gravity

• Height

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A Newton is a unit of ______.

• Acceleration

• Inertia

• Force

• Velocity

Name the missing force.

• Normal Force

• Push/Pull Force

• Friction Force

• Tension Force

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Name the missing force.

• Gravitational Force

• Normal Force

• Tension Force

• Friction Force

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The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

• Normal Force

• Gravitational Force

• Friction Force

• Air resistance

This diagram can be used to indicate which of the following? (TWO correct answers)

• An object at rest

• An object accelerating

• An object decelerating

• an object moving at a constant velocity (speed)

• (Trick question -- there is only one correct answer)

Which of the following is true about this free-body diagram?

• the forces are balanced

• the object is moving upward

• the object is free-falling

• the forces are unbalanced

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Newton's First Law: An object in motion will stay in motion and an object at rest will stay at _________ unless acted on by an outside force.