# Chapter 5: Newton's Third Law Of Motion, Action And Reaction

10 Questions | Total Attempts: 533  Settings  • 1.
For an action force, there must be a reaction force that
• A.

Always acts in the same direction

• B.

Is slightly smaller in magnitude than the action force

• C.

Is slightly larger in amplitude than the action force

• D.

Is exactly equal in magnitude

• 2.
An archer shoots an arrow. Consider the action force to be the bowstring against the arrow. The reaction to this force is the
• A.

Combined weight of the arrow and bowstring

• B.

Air resistance against the bow

• C.

Friction of the ground against the archer's feet

• D.

Grip of the archer's hand on the bow

• E.

Arrow's push against the bowstring

• 3.
A player catches a ball. Consider the action force to be the impact of the ball against the player's glove. The reaction to this force is the
• A.

Player's grip on the glove

• B.

Force the glove exerts on the ball

• C.

Friction of the ground against the player's shoes

• D.

Muscular effort in the player's arms

• E.

None of these

• 4.
A player hits a ball with a bat. The action force is the impact of the bat against the ball. The reaction to this force is the
• A.

Air resistance on the ball

• B.

Weight of the ball

• C.

Force that the ball exerts on the bat

• D.

Grip of the player's hand against the ball

• E.

Weight of the bat

• 5.
A baseball player bats a ball with a force of 1000 N. The reaction force that the ball exerts against the bat is
• A.

Less than 1000 N

• B.

More than 1000 N

• C.

1000 N

• D.

Impossible to determine

• 6.
As a ball falls, the action force is the pull of Earth on the ball. The reaction force is the
• A.

Air resistance acting against the ball

• B.

Acceleration of the ball

• C.

Pull of the ball's mass on the Earth

• D.

None of these

• 7.
A person is attracted toward the center of Earth by a 500-N gravitational force. The Earth is attracted toward the person with a force of
• A.

Zero

• B.

250 N

• C.

500 N

• D.

1000 N

• 8.
A karate chop delivers a blow of 3000 N to a board that breaks. The force that acts on the hand during this event is
• A.

Zero

• B.

1500 N

• C.

3000 N

• D.

6000 N

• 9.
Arnold Strongman and Suzie Small each pull very hard on opposite ends of a massless rope in a tug-of-war. The greater force on the rope is exerted by
• A.

Arnold, of course

• B.

Suzie, surprisingly

• C.

Both the same, interestingly enough

• 10.
Earth pulls on the moon. Similarly the moon pulls on Earth, evidence that
• A.

These two pulls comprise an action-reaction pair

• B.

Earth is larger so its pull is larger

• C.

The moon is smaller so its pull is smaller

• D.

Larger objects pull harder

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