Unit 2 Review

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

• the forces are are balanced

• the object is free-falling

• the object is moving upward

• the forces are unbalanced

In a force diagram, or free-body diagram, the size/length of the arrow tells you this about the force:

• relative strength

• relative distance

• relative direction

In a force diagram, or free-body diagram, the pointy-end of the arrow tells you this about the force:

• relative strength

• relative distance

• relative direction

A hockey puck glides to the right across the ice at a constant speed.

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What can you tell about the forces on F and H?

• They must be unbalanced.

• They are negative.

• They must be the same.

• They are equal to the net force.

Calculate the net force acting upon the object.

• 10 N north
• 10 N south
• 14.1 N east
• 0 N

What do you call a simple model to understand what will happen to an object due to the forces acting on it?

• Free Body Diagram

• Net Force

• Balanced Force

• Unbalanced Force

What is a force?

• The sum of the forces action on an object.

• When an object is experiencing friction.

• A push or a pull on an object.

• Calculating the net force of an object.

A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.

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A downward-moving skydiver who has just opened the parachute is slowing down.

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