Question 1

A pair of tennis balls fall through the air from a tall building. One ball is regular and the other is filled with lead pellets. The ball to reach the ground first is the

Accepted Answer

A)  regular ball.
B)  lead-filled ball.
C)  same for bothD) None of the above
E) All of the above

Question 2

A push on a 1-kg brick accelerates the brick. Neglecting friction, to equally accelerate a 10-kg brick requires the force to be

Accepted Answer

A)  just as much.
B)  10 times as much.
C)  100 times as much.
D)  one-tenth the amount.
E)  none of the aboveF) D) and E)
G) A) and B)

Question 3

A skydiver steps from a helicopter and falls for 5 s before reaching terminal velocity. During this 5-s interval, her acceleration

Accepted Answer

A)  is constant.
B)  increases.
C)  decreases.
D)  is zero.
E)  none of the aboveF) B) and E)
G) A) and B)

Question 4

Suppose you're coasting in a car at 60 km/h and apply the brakes until you slow to 40 km/h. When you suddenly release the brake, the car tends to

Accepted Answer

A)  momentarily regain its higher initial speed.
B)  continue moving at 40 km/h in the absence of forces.
C)  decrease in speed whether other forces act or not.D) All of the above
E) B) and C)

Question 5

Arnold Strongman and Suzie Small have a tug-of-war on a polished floor. Arnold wears socks and Suzie wears gym shoes. The likely winner is

Accepted Answer

A)  Arnold.
B)  Suzie.
C)  neither, a tied score
D)  no basis for predictingE) B) and C)
F) A) and D)

Question 6

A given net force propels an object along a straight-line path by a force. If the mass were doubled, its acceleration would

Accepted Answer

A)  quadruple.
B)  double.
C)  stay the same.
D)  be half.
E)  none of the aboveF) B) and D)
G) C) and E)

Question 7

How many forces act on an upwardly tossed coin when it gets to the top of its path?

Accepted Answer

A)  one; the force due to gravity
B)  two; gravity and the force in the coin itself
C)  three; gravity, the coin's internal force, and a turnaround force
D)  none of the aboveE) B) and C)
F) All of the above

Question 8

A 1-kg ball is thrown straight up at 10 m/s. Neglecting air resistance, the net force that acts on the ball when it is half way to the top of its path is

Accepted Answer

A)  1/2 N.
B)  1 N.
C)  5 N.
D)  7.5 N.
E)  10 N.F) A) and C)
G) A) and D)

Question 9

A girl pulls on a 10-kg wagon with a constant force of 30 N. What is the wagon's acceleration?

Accepted Answer

A)  0.3 m/s2
B)  3.0 m/s2
C)  10 m/s2
D)  30 m/s2
E)  300 m/s2F) B) and D)
G) None of the above

Exam 2: Newtons Laws of Motion

A girl pulls on a 10-kg wagon with a constant force of 30 N. What is the wagon's acceleration?

Correct Answer
verified

A pair of tennis balls fall through the air from a tall building. One ball is regular and the other is filled with lead pellets. The ball to reach the ground first is the

Correct Answer
verified

A skydiver steps from a helicopter and falls for 5 s before reaching terminal velocity. During this 5-s interval, her acceleration

Correct Answer
verified

A given net force propels an object along a straight-line path by a force. If the mass were doubled, its acceleration would

Correct Answer
verified

A push on a 1-kg brick accelerates the brick. Neglecting friction, to equally accelerate a 10-kg brick requires the force to be

Correct Answer
verified

A 1-kg ball is thrown straight up at 10 m/s. Neglecting air resistance, the net force that acts on the ball when it is half way to the top of its path is

Correct Answer
verified

How many forces act on an upwardly tossed coin when it gets to the top of its path?

Correct Answer
verified

Arnold Strongman and Suzie Small have a tug-of-war on a polished floor. Arnold wears socks and Suzie wears gym shoes. The likely winner is

Correct Answer
verified

Suppose you're coasting in a car at 60 km/h and apply the brakes until you slow to 40 km/h. When you suddenly release the brake, the car tends to

Correct Answer
verified

Exam 2: Newtons Laws of Motion

A girl pulls on a 10-kg wagon with a constant force of 30 N. What is the wagon's acceleration?

Correct AnswerverifiedShow Answer

A pair of tennis balls fall through the air from a tall building. One ball is regular and the other is filled with lead pellets. The ball to reach the ground first is the

Correct AnswerverifiedShow Answer

A skydiver steps from a helicopter and falls for 5 s before reaching terminal velocity. During this 5-s interval, her acceleration

Correct AnswerverifiedShow Answer

A given net force propels an object along a straight-line path by a force. If the mass were doubled, its acceleration would

Correct AnswerverifiedShow Answer

A push on a 1-kg brick accelerates the brick. Neglecting friction, to equally accelerate a 10-kg brick requires the force to be

Correct AnswerverifiedShow Answer

A 1-kg ball is thrown straight up at 10 m/s. Neglecting air resistance, the net force that acts on the ball when it is half way to the top of its path is

Correct AnswerverifiedShow Answer

How many forces act on an upwardly tossed coin when it gets to the top of its path?

Correct AnswerverifiedShow Answer

Arnold Strongman and Suzie Small have a tug-of-war on a polished floor. Arnold wears socks and Suzie wears gym shoes. The likely winner is

Correct AnswerverifiedShow Answer

Suppose you're coasting in a car at 60 km/h and apply the brakes until you slow to 40 km/h. When you suddenly release the brake, the car tends to

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
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