Sara rolled a basketball across some flat ground and noticed the ball slowed down and eventually stopped. Which best explains why the basketball stopped rolling?
The force of friction pulled on the basketball.
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15
Which object would need the least amount of force to move?
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15
The diagram shows four objects that are falling from different heights.
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15
An object is moving with a speed of 12 meters/second in a straight line. What will be the distance traveled by the object in 5 seconds? (distance = speed à time)
60 meters
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15
Stacy wants to roll an 8-lb bowling ball and a 10-lb bowling ball along a flat surface. If she wants to have both bowling balls roll at the same speed, what must she do?
use more force to push the 10-lb ball than is used to push the 8-lb ball
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15
Which graph could show a boy walking to his grandmotherâs house and stopping along the way to eat his lunch?
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15
The graph shows the speed of three race cars over a distance of 1.25 kilometers. The graph shows the speed of three race cars over a distance of 1.25 kilometers.
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seesaw
Swap points!
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seesaw
Swap points!
Okay!
gift
Win 25 points!
Okay!
thief
Give points!
5
10
15
20
25
thief
Give points!
5
10
15
20
25
fairy
Take points!
5
10
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25
fairy
Take points!
5
10
15
20
25
baam
Lose 25 points!
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15
What happens to the speed of an object when the position does not change over a period of time?
speed remains zero
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15
Which most affects a baseballâs motion when it is hit by a batter?
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trap
No points!
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seesaw
Swap points!
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shark
Other team loses 5 points!
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banana
Go to last place!
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15
Which best explains what happens to the speed of a toy car as it rolls across a flat surface covered in carpet?
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15
The graph shows two bicycles riding during a race. How much more time did bicycle X spend stopped than bicycle Y?