2891798
Descripción
Test por Nicholas Weiss, actualizado hace más de 1 año
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Creado por Nicholas Weiss
hace más de 9 años
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Pregunta 1
Pregunta
What is the unit for force?
Respuesta
-
Newtons
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Joules
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Watts
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kg
Pregunta 2
Pregunta
What are the units for energy?
Respuesta
-
Joule
-
Watts
-
Newtons
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Pounds
Pregunta 3
Pregunta
Weight is the same thing as mass.
Respuesta
- True
- False
Pregunta 4
Pregunta
The coefficient of friction is measured in________________.
Respuesta
-
N
-
kg
-
Joules
-
There are no units!
Pregunta 5
Pregunta
When you double the speed of the object you double its_____________________
Respuesta
-
Kinetic Energy
-
Potential Energy
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Momentum
Pregunta 6
Pregunta
145.000 has_______significant figures
Respuesta
-
3
-
4
-
5
-
6
Pregunta 7
Pregunta
The graph displays an objects position vs. time. During what time interval does the object have an acceleration?
Respuesta
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A
-
B
-
C
-
D
Pregunta 8
Pregunta
The graph displays an objects position vs. time. During what time interval is the object not moving?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 9
Pregunta
When does the object have a constant negative velocity?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 10
Pregunta
Momentum is always conserved for a single object.
Respuesta
- True
- False
Pregunta 11
Pregunta
Total kinetic energy is always conserved for inelastic collisions.
Respuesta
- True
- False
Pregunta 12
Pregunta
Total kinetic energy is conserved during elastic collisions.
Respuesta
- True
- False
Pregunta 13
Pregunta
What determines the force of static friction acting on an object? (check all that apply)
Respuesta
-
The coefficient of friction between the surfaces.
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The normal force of the surface
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The speed of the object
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The energy of the object
Pregunta 14
Pregunta
When an projectile reaches its peak flight its___________________________. (check more than one box)
Respuesta
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Velocity is 0m/s
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Acceleration is 0m/s/s
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Vertical Velocity is 0m/s
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Horizontal Velocity is 0m/s
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Acceleration is -9.81m/s/s
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Force is 0N
Pregunta 15
Pregunta
When an object is accelerating we can use the d=rt formula to solve problems involving that object.
Respuesta
- True
- False
Pregunta 16
Pregunta
A projectiles vertical speed is constant (assuming no air resistance).
Respuesta
- True
- False
Pregunta 17
Pregunta
A projectile's horizontal speed (assuming no air resistance) is constant.
Respuesta
- True
- False
Pregunta 18
Pregunta
If the Earth somehow were to shrink to half of its size (but kept the same mass), what would happen to our weight (think universal law of gravity)
Respuesta
-
It would double
-
It would be cut in half
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It would quadruple
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It would be 1/4 the original
Pregunta 19
Pregunta
Centripetal acceleration acts _____________________.
Respuesta
-
Tangent to the circular path.
-
Away from the center
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To the center
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Along the path of the object in motion
Pregunta 20
Pregunta
Linear speed of a rotating object acts____________________.
Respuesta
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To the center of motion.
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Away from the center of motion
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Tangential to the circular path
-
Along the circular path
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