Physics Chapter 2 Review – Flashcards

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question
Which scientist was credited for formulating a model in which the Earth circles the Sun?
answer
Copernicus
question
Which scientist first introduced inertia?
answer
Galileo
question
Inertia is defined as a ________________ ____ ________.
answer
property of matter
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If no external forces acts on a moving object, it will continue moving at the ________ _________.
answer
same speed
question
The amount of force needed to sustain motion of a rock in outer space is ___ __________.
answer
no force
question
A hockey puck sliding across the ice finally comes to rest because ____ ________.
answer
of friction
question
Which concept takes place when a tablecloth is quickly yanked beneath dishes resting on a table?
answer
inertia
question
When a rocket ship gaining speed in outer space runs out of fuel, it ____ _________ ________ ________.
answer
no longer gains speed
question
When you quickly jerk a cart forward that has a ball resting in the middle, the ______ of the cart hits the ball.
answer
back
question
Which is a vector quantity? area mass volume none of the above
answer
none of the above
question
A brick pulled to the left with 15 N and to the right with 5 N experiences a net force of?
answer
10 N to the left
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If Nellie hangs from a horizontal bar that is supported by 4 vertical ropes, the tension in the ropes add _________ ___ _____ _______.
answer
equal to her weight
question
The net force of any object in equilibrium is _____.
answer
zero
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The equilibrium rule applies to: objects or systems at rest objects or systems in uniform motion in a straight line both of these none of these
answer
both of these
question
A hockey puck sliding at constant velocity across the ice is in __________________.
answer
equilibrium
question
If you toss a coin straight upward in train that slows while the coin is in the air, the coin will land where?
answer
in front of you
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If you toss a coin straight upward in a train that gains speed while the coin is in the air, the coin will land where?
answer
in back of you
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If you toss a coin straight upward in a train moving at a constant velocity, the coin will land as if you were ____ _______.
answer
at rest
question
A gymnast performing somersaults in a high-flying plane moving at a constant velocity needs to make _____ _______________.
answer
no adjustments
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