Newton's Laws and Free Body Diagrams

Based on the free-body diagram, which statement is true?

• The object is moving to the left

• The object is accelerating to the right

• The object is accelerating to the left

• The object is moving to the right

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NGSS.MS-PS2-2

Based on this free-body diagram, which statement can you be sure is true?

• This object is not moving

• This object is moving to the right

• This object is accelerating to the left

• This object is accelerating to the right

What is Newton's First Law?

• The restoring force of a spring is proportional to the displacement of the spring

• An object in motion will stay in motion unless acted on by an external force

• F = ma
  

• For every force, there's a force equal in magnitude but opposite in direction.

What is Newton's Second Law

• F = -kx

• F = ma

• F = mg

• F = mad

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

Block of cheese, B, has a mass of 0.5 kg and the wheel of cheese, W, has a mass of 0.4 kg. What is the tension in rope 1? Assume the acceleration is 0 m/s²

• 4.91 N

• 8.83 N

• 3.92 N

• 0.981 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The combination of all the forces acting on an object is the...

• net force

• action force

• reaction force

• balance force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When determining the NET force on an object you should (TWO correct answers)

• subtract forces in opposite directions

• add forces in the same direction

• divide by velocity

• multiply by acceleration

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NGSS.MS-PS2-2

The tendency of an object to resist changes in its motion is...

• inertia

• force

• acceleration

• velocity

Which statement best explains Newton's Third Law of Motion?

• An object at rest tends to stay at rest.

• For every action there is an equal and opposite reaction.

• The acceleration of an object is based on the force applied.

• An object continues its motion until an unbalanced force is applied.

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NGSS.MS-PS2-1

As the wheels of a train push down on the track, the track pushes back against the wheels. Which of Newton's laws is used to explain these forces.

• An object at rest tends to stay at rest unless acted upon by an unbalanced force.

• The net force of an object is its mass times its acceleration.

• For every action, there is an equal and opposite reaction.

• Any 2 objects exert a gravitational force of attraction on each other.

Tags

NGSS.MS-PS2-1