6631417
Descripción
Test por Amber Garcia, actualizado hace más de 1 año
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Creado por Amber Garcia
hace alrededor de 8 años
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Pregunta 1
Pregunta
Compared to the mass of a certain object on Earth, the mass of the same object on the moon is:
Respuesta
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less
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more
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the same
Pregunta 2
Pregunta
What two quantities does torque depend on [blank_start]......?[blank_end]
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Force & Lever arm
Pregunta 3
Pregunta
Whenever the net force on an object is zero, its acceleration is[blank_start]:[blank_end]
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0
Pregunta 4
Pregunta
A fast car can accelerate without interacting with anything
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- True
- False
Pregunta 5
Pregunta
What must occur for an object to accelerate? [blank_start]blank[blank_end]
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A netforce must act on it
Pregunta 6
Pregunta
What must occur for an object to fall over? [blank_start]blank[blank_end]
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The center mass must be over pivet point
Pregunta 7
Pregunta
Define momentum. [blank_start]blank[blank_end]
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Measure how difficult to stop moving obj
Pregunta 8
Pregunta
Age of Earth? [blank_start]blanket[blank_end]
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4.6 billion years
Pregunta 9
Pregunta
Age of Universe[blank_start]?[blank_end]
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13.7 billion years
Pregunta 10
Pregunta
Age of Sun[blank_start]?[blank_end]
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5 billion
Pregunta 11
Pregunta
Closest galaxy and how many light years away? [blank_start]..[blank_end]
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LMC 160,000 LY away
Pregunta 12
Pregunta
Closest star and how many light years away[blank_start]?[blank_end]
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Alpha Centauri and 3.3 LY away
Pregunta 13
Pregunta
Hooke's Law [blank_start]is?[blank_end]
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Force is proportional to stretch F=kx
Pregunta 14
Pregunta
An object maintains its state of motion because it has
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weight
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speed
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acceleration
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mass
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none of the above
Pregunta 15
Pregunta
Describe briefly how Netwon's third law manifests itself for the Earth-Moon system[blank_start]...?[blank_end]
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If Earth has a foce so does the moon
Pregunta 16
Pregunta
Pluto was discovered by: [blank_start]___[blank_end]
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Clyde Tombough 1929
Pregunta 17
Pregunta
What was the name of Newton's book, published 20 years after his initial findings[blank_start]?[blank_end]
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Principia
Pregunta 18
Pregunta
If the mass of an object does not change, a constant net force on the object produces constant
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velocity
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acceleration
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displacement
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velocity and acceleration
Pregunta 19
Pregunta
To move forward, WHY does a skateboarder push off against the ground instead of just pushing his body with his hand? [blank_start]------------[blank_end]
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Skateboarder needs a net external force
Pregunta 20
Pregunta
What was Tyco Brahe's major contribution to science?
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Charted planets and stars daily for twenty years
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Wrote Principia
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Created telescope
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Only charted planets for twenty years
Pregunta 21
Pregunta
[blank_start]State Newton's Three Laws of Motion[blank_end]
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Law of Intertia,Fnet=ma, Action/reaction
Pregunta 22
Pregunta
Kepler's Three Laws of Planetary Motion? [blank_start]...[blank_end] [blank_start]...[blank_end] [blank_start]...[blank_end]
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1. planets move ellipses around the sun
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2. planets move faster closest to sun
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T^2 x a^3 period/distance are proport.
Pregunta 23
Pregunta
Define Mass
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Measure of space
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Measure of objects inertia
Pregunta 24
Pregunta
Define weight
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Measure of the effect if gravity in an objects mass
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Measure of velocity on an objects mass
Pregunta 25
Pregunta
Facts about Isaac Newton's Life
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Had two siblings
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Born on Xmas, Built a working sun dial @ 6 years old, had several breakdowns, developed calculus
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Never went to college, born on Halloween, live with grandpa
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