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Chapter 12
Test Description: Newton
Instructions: Answer all questions to get your test result.
1) The law that states that the unbalanced for acting on an object equals the object\'s mass times its acceleration is
A
the law of conservation of momentum
B
Newton\'s Second Law of Motion
C
Newton\'s First Law of Motion
D
Newton\'s Third Law of Motion
2) If 2 objects with different masses and trav eling with different velocities collide, what law allows you to predict the motion of the objects after the collision?
A
Newton\'s Third Law of Motion
B
the law of conservation of momentum
C
the law of universal gravitation
D
Newton\'s Second Law of Motion
3) Express the following as an equation. One newton is the force that can give an object with a mass of 1kg an acceleration of 1/m^2
A
1 N=1ms^2 x 1 kg
B
1 N=1ms^2 /1 kg
C
1 N=1 kg / 1ms^2
D
1 N x 1 kg / = 1ms^2
4) What happens immediately after a sky diver opens her parachute
A
the foce of gravity greatly increases
B
the sky diver is in a free fall
C
air resistance greatly increases
D
the sky diver\'s speed increases
5) Which statement illustrates Newton\'s first law?
A
all of the answers are correct
B
A stone will not move unless something pushes or pulls it
C
As a car comes to a stop, the passangers continue to move forward
D
A ball rolling across the floor eventually slows down
6) What unbalanced force is needed to give a 976 kg vehicle an acceleration of 2.50m/s^2
A
9.9 X 10^9 lb
B
2.44 X 10^9 N
C
2.44 X 10^9 lb
D
9.9 X 10^9 N
7) Which of the following objects exerts a gravitation force
A
all of the answers are correct
B
a feather
C
a bowling ball
D
a book
8) How much does a 59 kg woman weigh on Earth?
A
6.02 N
B
578 N
C
59 lb
D
145 lb
9) What is the momentum of a 255 g apple falling at 18 m/s
A
15.9 kg x m/s^2 downward
B
15.9 m/s^2 downward
C
4.08 m/s^2 downward
D
4.08 kg x m/s^2 downward
10) How does the total momentum of the two objects before a collision compare with the total momentum after the collision?
A
It is equal to zero
B
It is greater
C
It is less
D
It is the same
*select an answer for all questions
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