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Week 8 Dynamics (Newton 2nd And 3rd)
Test Description: Week 8 review of Newton's 2nd and 3rd laws
Instructions: Answer all questions to get your test result.
1) A net force on an object causes it to _____ in the direction of that net force.
A
remain stationary
B
disintegrate
C
levitate
D
accelerate
2) Force is a vector, having magnitude and a ______.
A
speed
B
direction
C
unit
D
quantity
3) A force is a push or pull, or any ____ that has the ability to change motion.
A
action
B
machine
C
power
D
work
4) The kilogram (kg) is the unit of mass in _____.
A
biology
B
physics
C
motion
D
acceleration
5) Acceleration: Meters per second squared, or m/s/s (m/s2) is the unit of acceleration. This is a measure of how much faster an object will move every ____ in a direction.
A
way
B
day
C
hour
D
second
6) One _____ is the force required to accelerate one kilogram of mass by one meter per second squared.
A
Volt
B
Newton
C
Joule
D
Watt
7) In the second law of motion, when force goes up _____ goes up.
A
power
B
inflation
C
acceleration
D
work
8) Acceleration = Force รท mass. Since force is the _______ in the fraction, when it goes up the acceleration must also go up by the same amount.
A
coefficient
B
constant
C
numerator
D
denominator
9) In the second law of motion, when mass goes up acceleration goes down. In other words: acceleration is cut in half when ____ doubles.
A
circumference
B
time
C
mass
D
volume
10) A ___ diagram is a list of all the forces represented by arrows on an object.
A
position-time
B
mass
C
force
D
volume
11) The size of the arrow in a free-body diagram reflects the ____ of the force.
A
subtraction
B
temperature
C
time
D
magnitude
12) For a force on an object, there is an equal and opposite force. This statement best describes:
A
Newton's second law of motion.
B
Newton's first law of motion.
C
Newton's third law of motion.
13) Mass is a amount of matter in an object. This is not affected by ___.
A
matter
B
gravity
C
number of atoms in the object
14) Weight is a measure of the ____ of gravity on an object's mass.
A
force
B
power
C
subtraction
D
elimination
*select an answer for all questions
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