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15
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A car is stopped at a red light. The light turns green, and the car turns right around a corner. Which property of the car is changing?
speed only
direction only
position only
acceleration
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15
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The speed of which of the following objects is affected by gravity?
a ball falling after being kicked in the air
a cruise ship on the ocean
a soccer ball rolling to the goal
a kite in the sky
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15
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Any change in the speed or direction of an objectโs motion is
velocity
acceleration
friction
gravity
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baam
Lose 10 points!
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star
Double points!
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rocket
Go to first place!
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×
thief
Give points!
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25
15
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In which example is a force causing an object to accelerate?
a soccer ball sitting on the ground
a train moving at constant speed around a curve in a track
a girl riding a bicycle constant speed straight
a rock sitting on a ledge at the top of a mountain
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15
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The force that acts to pull all objects down to Earth is
friction
speed
gravity
force
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15
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The location of an object in relation to another object or place describes
force
position
speed
motion
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15
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An object that is changing its position is in
speed
friction
velocity
motion
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15
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A push or a pull is a(n)
position
force
friction
gravity
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15
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A force that acts against the direction of an objectโs motion and causes it to slow or stop is
gravity
speed
friction
motion
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15
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A measure of an objectโs change in position during a certain amount of time is
velocity
friction
speed
gravity
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baam
Lose 15 points!
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magnet
Take 15 points!
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fairy
Take points!
5
10
15
20
25
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thief
Give points!
5
10
15
20
25
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boom
Lose 50 points!
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gift
Win 10 points!
Okay!
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fairy
Take points!
5
10
15
20
25
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baam
Lose 15 points!
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banana
Go to last place!
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fairy
Take points!
5
10
15
20
25
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shark
Other team loses 15 points!
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baam
Lose 20 points!
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15
×
The speed of an object in a particular direction is its
velocity
speed
gravity
motion
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15
×
Renee is throwing a ball high into the air and then catching it. What is the effect ofgravity on the ball?
It increases the mass of the ball.
It makes the ballโs speed remain constant
It makes the ballโs speed slow down
It pulls the ball back to the ground.
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