Friction
Graphical Meanings
Speed related
Hodge Podge
Force
100
A force that opposes the motion of two surfaces in contact with one another.
What is friction?
100
Graph #1 - A horizontal line on a distance versus time graph.
What is the object is stopped or not moving?
100
If you say,"A bird is going 30 m/s west." you are stating its _______.
What is velocity?
100
Meters/second East
What is Velocity?
100
All the forces acting on an object are equal and opposite.
What are balanced forces?
200
A formula one racing car has less ____________ because of the aerodynamic shape and low profile of the car.
What is air resistance or fluid friction?
200
Graph #5 - A velocity versus time graph with a horizontal line.
What is moving with a constant velocity?
200
Speed at a certain point in time or the speed on a speedometer
What is instantaneous speed?
200
Newtons - give an example
What is force? Gravity Friction Normal Force - Earth pushing back up on you Applied Force
200
No motion or continue to move at a constant velocity.
What is a net force of zero?
300
True or False? Rolling friction is smaller in magnitude than sliding friction, and static friction is usually greater than both.
What is TRUE?
300
Graph #3 - A distance versus time graph with a curved graph - the slope is increasing.
What is the object is accelerating or speeding up?
300
How fast velocity changes or when something speeds up, slows down, or changes direction
What is acceleration?
300
meters/square second (m/s^2)
What is acceleration?
300
Any push or pull on an object.
What is a force?
400
The type of friction that exists between two surfaces before they start moving. (Hint: means staying the same)
What is static friction?
400
Graph #2 - A velocity versus time graph with a constant negative slope.
What is the object is decelerating or slowing down?
400
Any change in position relative to a reference frame
What is motion?
400
An object moves 20 m west, then turns around an goes 20 m east - its _____________ is 0 m.
What is displacement?
400
______ occur when the forces acting on a object do not cancel one another out and results in the acceleration of an object.
What are unbalanced forces?
500
Two ways in which friction can be reduced.
What are reducing surface area, using lubricants, more aerodynamic (shape), smoother surfaces?
500
Graph #4 - A distance versus time graph that has a constant positive slope.
What is the object is moving with a constant velocity?
500
Examples are displacement, velocity, acceleration, and force - they all have a number and a direction
What are vectors?
500
The buildings and street along which a car is moving - they are referred to as the car's ________________.
What is reference frame or frame of reference?
500
Force on an object due to gravity
What is its weight?
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