Question 1

Gravity is an attractive force between

Accepted Answer

A)  all massive objects.
B)  Earth and objects on Earth.
C)  Earth and Moon, and objects on Earth.
D)  all objects everywhere.E) C) and D)
F) All of the above

Question 2

From the equation w = mg, it is apparent that weight is a (an)

Accepted Answer

A)  force.
B)  mass.
C)  acceleration.
D)  None of the above.E) All of the above
F) A) and D)

Question 3

The mass of a 100-N sack of seed is closest to

Accepted Answer

A)  10 kg.
B)  10 lb.
C)  98 kg.
D)  1,000 kg.E) C) and D)
F) A) and B)

Question 4

Suppose that a rock is swinging in a circle when some string is let out so that the length doubled as the same speed is maintained.The force now exerted on the string is

Accepted Answer

A)  the same as before.
B)  doubled.
C)  half as great.
D)  four times as great.E) C) and D)
F) A) and B)

Question 5

A boy on a skateboard pushes off the ground with his foot.He and the skateboard accelerate down the sidewalk due to the force

Accepted Answer

A)  he exerts against the ground.
B)  between the skateboard wheels and the ground.
C)  the ground exerts against his foot.
D)  of gravity acting on the skateboard.E) A) and D)
F) B) and D)

Question 6

You should "follow through" when hitting a ball because

Accepted Answer

A)  this increases the force.
B)  momentum is conserved.
C)  of the relationship  Δ\DeltaΔ p = Ft.
D)  momentum is mv. E) All of the above
F) A) and B)

Question 7

The attractive force a 70-kg person exerts on Earth is much, much smaller than the force Earth exerts on the person.

Accepted Answer

A) True 
 B)False

Question 8

If you double the mass of an object while an unbalanced force remains constant,

Accepted Answer

A)  the object moves at half the speed.
B)  the acceleration of the object is doubled.
C)  the object will gradually slow down.
D)  The acceleration of the object is halved.E) B) and C)
F) C) and D)

Question 9

A cannon ball and a bowling ball were dropped at the same time from the top of a building.At the instant before the balls hit the sidewalk, the cannon ball has greater

Accepted Answer

A)  velocity.
B)  acceleration.
C)  momentum.
D)  All of these are the same for the two balls.E) A) and B)
F) A) and C)

Question 10

Newton's second law states that if an unbalanced force acts on an object, it will move at constant velocity.

Accepted Answer

A) True 
 B)False

Exam 2: Motion

The attractive force a 70-kg person exerts on Earth is much, much smaller than the force Earth exerts on the person.

Correct Answer
verified

Gravity is an attractive force between

Correct Answer
verified

If you double the mass of an object while an unbalanced force remains constant,

Correct Answer
verified

The mass of a 100-N sack of seed is closest to

Correct Answer
verified

From the equation w = mg, it is apparent that weight is a (an)

Correct Answer
verified

Newton's second law states that if an unbalanced force acts on an object, it will move at constant velocity.

Correct Answer
verified

A cannon ball and a bowling ball were dropped at the same time from the top of a building.At the instant before the balls hit the sidewalk, the cannon ball has greater

Correct Answer
verified

You should "follow through" when hitting a ball because

Correct Answer
verified

Suppose that a rock is swinging in a circle when some string is let out so that the length doubled as the same speed is maintained.The force now exerted on the string is

Correct Answer
verified

A boy on a skateboard pushes off the ground with his foot.He and the skateboard accelerate down the sidewalk due to the force

Correct Answer
verified

Exam 2: Motion

The attractive force a 70-kg person exerts on Earth is much, much smaller than the force Earth exerts on the person.

Correct AnswerverifiedShow Answer

Gravity is an attractive force between

Correct AnswerverifiedShow Answer

If you double the mass of an object while an unbalanced force remains constant,

Correct AnswerverifiedShow Answer

The mass of a 100-N sack of seed is closest to

Correct AnswerverifiedShow Answer

From the equation w = mg, it is apparent that weight is a (an)

Correct AnswerverifiedShow Answer

Newton's second law states that if an unbalanced force acts on an object, it will move at constant velocity.

Correct AnswerverifiedShow Answer

A cannon ball and a bowling ball were dropped at the same time from the top of a building.At the instant before the balls hit the sidewalk, the cannon ball has greater

Correct AnswerverifiedShow Answer

You should "follow through" when hitting a ball because

Correct AnswerverifiedShow Answer

Suppose that a rock is swinging in a circle when some string is let out so that the length doubled as the same speed is maintained.The force now exerted on the string is

Correct AnswerverifiedShow Answer

A boy on a skateboard pushes off the ground with his foot.He and the skateboard accelerate down the sidewalk due to the force

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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