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15
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What factors can affect the friction on an object?
The surface (rough or smooth), the weight (heavy or light), surface area
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20
×
Who discovered gravity and how?
Isaac Newton discovered gravity when he saw an apple fall straight down from a tree and wondered why it didn't fall sideways or upwards.
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10
×
Are the forces balanced or unbalanced?
Balanced
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25
×
Using Weight = Mass x Gravitational field, calculate the weight of a 75kg object on Uranus. (Uranus GFS = 9N/KG)
675N
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10
×
What are mass and weight measured in? Give an answer for each.
Mass in KG, Weight in Newtons
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seesaw
Swap points!
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seesaw
Swap points!
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shark
Other team loses 25 points!
Okay!
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banana
Go to last place!
Oops!
25
×
What is upthrust? What keeps it balanced?
The upward force that a liquid puts on an object floating in it. The weight of the object balances the upthrust.
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20
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Describe the difference between mass and weight.
Mass is a measurement of how much matter or "stuff" is in an object. Weight is a measurement of the gravity acting on the object.
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10
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What is friction?
Friction is a force that resists the sliding or rolling of one solid object over another.
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lifesaver
Give 20 points!
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gift
Win 25 points!
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gift
Win 15 points!
Okay!
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baam
Lose 25 points!
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15
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Where will an astronaut have a greater mass? On the moon or on earth?
None: Mass stays the same, it is not affected by gravity.
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25
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What is Newton's first law? Give an example to support your answer.
An object will not change its motion unless a force acts on it (object in rest will stay at rest) e.g people flying forward when a car stops quickly.
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lifesaver
Give 25 points!
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star
Double points!
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fairy
Take points!
5
10
15
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25
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thief
Give points!
5
10
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25
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boom
Lose 50 points!
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shark
Other team loses 10 points!
Okay!
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gift
Win 20 points!
Okay!
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banana
Go to last place!
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5
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Balanced or unbalanced?
Balanced
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20
×
Describe Newton's third law. Give an example.
Every action has an equal and opposite reaction. e.g. stepping off a boat and the boat pushes back or a rocket pushing air down so that it goes up.
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