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Friction
Velocity
Acceleration
Forces
Misc.
100
What would be an example of increasing helpful friction?
What is making surfaces rougher, increasing force pushing object together
100
This is the equation to find velocity.
What is v = distance / time
100
A change in speed, direction, or both would be considered
What is acceleration
100
All forces acting on an object
What is net force
100
This is friction between two stationary surfaces
What is static friction
200
What is friction?
What is a force that opposes motion between two surfaces that are touching.
200
What two things must be included when considering velocity?
What is direction and speed
200
This is the equation for acceleration.
What is a = (final velocity - initial velocity) / time
200
When net force is zero we can also say the force is...
What is balanced
200
This must be in a straight line and must tell a direction
What is displacement
300
How can harmful friction be reduced?
What is make surfaces smoother, lubricants, replace sliding with rolling friction
300
On a velocity-time graph this can be said about the relationship of the slope of the line and the velocity.
What is the higher the slope the higher the velocity, lower the slope the lower the velocity
300
Triangle v refers to this
What is (final velocity - initial velocity)
300
Remaining at a constant velocity determines this is your force
What is zero net force
300
Speed measured at a given time is referring to
What is instantaneous speed
400
What are the two main types of friction?
What is static and kinetic
400
Velocity of an object will change when...
What is when its acted upon by an outside force
400
If a velocity-time graph is horizontal it tells you the acceleration is ...
What is zero acceleration
400
This is occurring when a force is unbalanced
What is net force is greater than zero, objects will move
400
Of the two types of kinetis friction this creates less friction
What is rolling
500
You do this to the shape of cars so less air has to be displaced.
What is streamlining
500
If a bear swims 400 m in 25 seconds what is his velocity?
What is 16 m/s
500
This is acceleration in a uniform circular motion
What is centripetal acceleration
500
stretching a rubber band between two hands is an example of? What would be an example of the other type of force
What is balanced force
500
When is speed most accurate
What is when measured per second