(Savvas 12.3) Ch. 12 Newton’s Third Law of Motion and Momentum

According to Newton’s third law of motion, what happens whenever one object exerts a force on a second object?

• The second object exerts an equal and opposite force on the first object.

• The second object exerts a greater force on the first object.

• The first object stops exerting force.

• The second object does not exert any force.

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NGSS.MS-PS2-1

The equal and opposite forces described by Newton’s third law are called __ and __ forces.

• action and reaction

• push and pull

• gravity and friction

• tension and compression

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NGSS.MS-PS2-1

Choose the sentences that are true about action-reaction forces.

• a. Newton’s second law describes action-reaction forces.

• b. Forces always exist in pairs.

• c. Action-reaction forces never cancel.

• d. All action-reaction forces produce motion.

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NGSS.HS-PS2-1

Is the following statement true or false? Action-reaction forces do not cancel each other because the action force is always greater than the reaction force.

• True

• False

Choose the letter of each factor that affects the momentum of a moving object.

• mass

• volume

• shape

• velocity

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NGSS.HS-PS2-2

If two identical objects are moving at different velocities, the object that is moving faster will have __ momentum.

• more

• less

• equal

• no

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NGSS.HS-PS2-2

Is the following sentence true or false? An object with a small mass can have a large momentum if the object is traveling at a high speed.

• True

• False

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NGSS.HS-PS2-2

Identify the momentum formula, including the correct units.

• p = mv (kg·m/s)

• p = m/v (kg·m/s)

• p = m + v (kg·m/s)

• p = m - v (kg·m/s)

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NGSS.HS-PS2-2

NGSS.HS-PS2-3

Circle the letter of the object that has the greatest momentum.

• a. a 700-gram bird flying at a velocity of 2.5 m/s

• b. a 1000-kilogram car traveling at 5 m/s

• c. a 40-kilogram shopping cart rolling along at 0.5 m/s

• d. a 300-kilogram roller coaster car traveling at 25 m/s

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NGSS.HS-PS2-2

Conservation of momentum means:

• Momentum is created or destroyed in an isolated system.

• Momentum remains constant in an isolated system.

• Momentum can be transferred but not conserved.

• Momentum is only conserved in non-isolated systems.

Tags

NGSS.HS-PS2-2