This friction force acts on objects that are at rest and needs to be 'overcome' in order to cause acceleration.
static friction
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thief
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25
gift
Win 25 points!
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shark
Other team loses 10 points!
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baam
Lose 5 points!
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10
TRUE or FALSE: Because the weight formula shows that mass and weight are proportional, doubling the mass of an object will not affect its weight.
FALSE
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10
How do BALANCED forces affect the motion of an object?
Balanced forces DO NOT affect the motion of an object.
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10
What is the formula used to describe Newton's 2nd Law?
F = m x a (or any correct variation!)
a = F/m
m = F/a
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5
TRUE or FALSE: Friction is a force that helps objects that are touching move past each other more easily.
FALSE
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5
On the moon, the acceleration due to gravity is only about one sixth that on Earth. Thus, an object will weight _________ on the moon than it weighs on Earth.
less
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baam
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magnet
Take 25 points!
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rocket
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thief
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5
When drawing a Free Body Diagram, in what direction will you draw an arrow to represent gravity?
Downward
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10
How do UNBALANCED forces affect the motion of an object?
The object accelerates (changes is velocity - speed and/or direction)
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5
What do we call the OVERALL force acting on an object after all the forces are combined?
Net force
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5
TRUE or FALSE: Fluid friction is a force that opposes the motion of an object through a fluid such as water.
TRUE
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5
The curved path caused by the combination of initial forward velocity and the downward force of gravity is known as __________.
projectile motion
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10
What is the formula used to calculate the weight of an object?
Weight = mass of the object x acceleration due to gravity
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5
TRUE or FALSE: The law of inertia states that an object in motion will eventually slow down and come to a compete stop if it travels far enough in the same direction.