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20 questions
The sum of all forces acting on an object is known as what?
Summed Forces
Balanced Forces
Unbalanced Forces
Net Force
Gross Force
Why does an uncrumpled paper fall through the air more slowly compared to a crumpled up piece?
Because they have the same mass
Because the crumpled up piece has more surface area
Because the crumpled up piece is more dense
Because the uncrumpled piece weighs less
Because the uncrumpled piece has greater surface area
Which type of friction has the greatest force?
Rolling
Static
Sliding
All types are equal and opposite
If I am pushing a box with a force of 300 N, and the box has 150 N of friction with the floor, what is the net force on the box?
Not enough information, we need to know the mass of the box
150 N in the direction you are pushing
150 N opposite the direction you are pushing
300 N in the direction you are pushing
What are two ways to increase friction?
Add oil
Increase Normal Force between the objects
Move the objects faster
Make the surfaces rougher
Go from static to sliding
What are two ways to increase air resistance?
Make the object have a larger surface area
Make the object heavier
Make the object more dense
Make the object lighter
Move the object faster
The amount of force, exerted on an object due to gravity would be considered that object's _______.
Net Force
Weight
Gravitational Acceleration
Mass
The force exerted by an surface when it won't allow something to pass through it is called what?
Normal Force
Abnormal Force
THE Force
Frictional Force
Net Force
When an object is falling, what happens at terminal velocity?
The object is terminated
The object stops falling
The object stops accelerating
Nothing, Terminal Velocity is just a term for really fast
What two things influence gravity?
Height and Weight
Mass and Distance
Hopes and Dreams
Weight and Mass
What causes friction?
Stickiness of surfaces
Microwelds
Tiny Hook and Loops (like Velcro)
Very small amounts of glue
What two things determine friction?
Texture and Force between the surfaces
Texture and Mass
Force Between the surfaces and Mass
Texture and Surface Area
Velocity and Surface Area
An object must be moving in order to have friction.
True
False
Both True and False
Neither True nor False
The SI unit of Force
Kilograms
Seconds
Pounds
Newtons
A force that opposes motion between two surfaces that are in contact.
Friction
Newton's Third Force
Drag
Negative Velocity
Friction that acts on objects that are not moving.
Stationary
Static
Sliding
Teflon
Type of friction that occurs when two solid surfaces slide over each other.
Sliding
Slipping
Scooting
Static
Friction that occurs when an object rolls over a surface.
Sliding
Rolling
Round
Bearing
When the force of a falling object is equal to its air resistance and an object no longer speeds up any further.
Maximum velocitude
Point break
Equilibrium
Terminal Velocity
states that any two masses exert an attractive force on each other, the amount of which depends on the mass of the two objects and the distance between them
Newton's First Law
Newtons' Second Law
Newton's Third Law
Newton's Law of Universal Gravitation
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