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5
×
The hockey puck is at rest until the hockey stick applies a force. This shows which law?
1st
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eraser
Reset score!
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gift
Win 25 points!
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fairy
Take points!
5
10
15
20
25
×
lifesaver
Give 15 points!
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25
×
How fast would a 3g toy car accelerate if it was pushed wit 30N of force?
a = F/m 30/3 = 10 m/s^2
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20
×
Net force?
17N east/right
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5
×
These soccer balls were picked up off the field and placed on this rack. What type of energy do these balls have now?
Potential
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10
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At point 1 the roller coaster will have ________ energy and at point 4 it will have ______ energy.
Potential; kinetic
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25
×
If an airplane accelerates at 2 m/s^2 and it's engines are applying 10000 N of force, what is the airplane's mass?
m = F/a 10000/2 = 5000 g
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10
×
An object in motion will stay in motion and an object at rest will stay at rest until acted upon by a force.
1st
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5
×
These three components make up which Law of Motion?
2nd
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20
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If I kick a 20g ball and it accelerates at 3m/s^2, what force did I kick the ball with?
20 x 3 = 60N
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5
×
You need a force to accelerate an object that has mass
2nd
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15
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The force that opposes the motion of objects. For example, this force pushes back on you when you walk forward
friction
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25
×
Velocity, speed or acceleration? 1) 30 mph west 2) a car taking a sharp corner 3) 30 mph
1) velocity 2) acceleration 3) speed
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eraser
Reset score!
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rocket
Go to first place!
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shark
Other team loses 20 points!
Okay!
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baam
Lose 25 points!
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seesaw
Swap points!
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rocket
Go to first place!
Okay!
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shark
Other team loses 10 points!
Okay!
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baam
Lose 20 points!
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10
×
All forces act in pairs. There is always an action force and a _________ force.
reaction
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