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15
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Equal forces acting on an object in opposite directions; object will not move:
balanced force
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15
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The average human can walk about 8 miles in 2 hours. What is the average speed?
4 mph
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15
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How does the mass of an object affect acceleration?
the smaller the mass of an object the greater the force need
none of the above
The greater the mass of an object the smaller the force nee
The greater the mass of an object the greater the force nee
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15
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What is the formula for average speed?
Average Speed = Total Distance ÷ Total Time
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15
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A snow plow uncovered 100 miles of road in 4 hours . What was the average speed of the plow? (speed = distance divided by time)
25 mph
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15
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Forces that produce a nonzero net force, which changes an object's motion:
unbalanced force
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15
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A boy rides a skate board down a hill. Eventually the skate board stops. Which is most responsible for causing the skateboard to stop?
friction acting on the skateboard
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15
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How does a wagons motion change when additional force is applied?
as force increases, acceleration increases
as forces increases, the wagon's mass changes
as forces increases, the wagon direction changes
as force increases, acceleration decreases
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trap
No points!
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fairy
Take points!
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25
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fairy
Take points!
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25
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banana
Go to last place!
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15
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A book falls off the desk. What moves the book towards the floor?
gravity
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banana
Go to last place!
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seesaw
Swap points!
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rocket
Go to first place!
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baam
Lose 5 points!
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15
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What two measurements are needed to calculate average speed?
distance and time
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15
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A force that one surface exerts on another when the two surfaces rub against each other and causes objects to slow down or stop.
friction
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15
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The tendency of an object to resist any change in its motion is:
inertia
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thief
Give points!
5
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25
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seesaw
Swap points!
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rocket
Go to first place!
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banana
Go to last place!
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15
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Jose Altuve is at batting practice for the Houston Astros. What was the average speed of the baseball for his third hit as it traveled in the air?
32 m/sec
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