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Vocab
Newton's Laws
Balanced and Unbalanced Forces
Speed and Distance Formula Problems
Simple Machines
100
What is the definition of force?
A push or pull on an object.
100
For every action what is there?
An equal and opposite reaction.
100
Is a plane a balanced or unbalanced force?
Unbalanced
100
How would a car go with a steady speed?
In a straight line.
100
What is a rigid bar that rests on a pivot point?
A lever.
200
What is inertia?
The tendency of a moving object to keep moving in a straight line or of any object to resist a change in motion.
200
How does inertia work?
The state of motion of an object does not change until a force is applied to it.
200
Is speed a type of balanced or unbalanced force?
Unbalanced force
200
How can you tell the velocity of something?
You need to know the speed and direction of it.
200
What is a wheel with a rope that can pull up or set items down?
A pulley.
300
What is friction?
A force that opposes the motion of an object moving past another.
300
What happens if friction is taken away?
No force is needed to maintain motion at a steady rate.
300
How can the motor apply force to the plane without causing the plane to accelerate?
The force of the planes motor is exactly offset by other forces acting in the opposite direction
300
If something travels 213 meters in one second,what is its speed?
213 meters per second.
300
What is the part of the lever that you apply to an input effort force to?
An effort arm.
400
What is speed?
How fast an object's position changes with time at any given moment.
400
If a car is in rapid motion that means.....
It has little mass.
400
What happens when an unbalanced force acts on an object?
The objects acceleration equals the force divided by the objects mass.
400
How can position be measured as?
The distance traveled past position 1.
400
What is the part of a lever you apply an input effort force to?
An effort arm.
500
What is acceleration?
Change in velocity with respect to time.
500
What sets objects in motion?
A force.
500
When we use the equation a= F/m to find acceleration, what does F always stand for?
It stands for an unbalanced force.
500
What would applying a force to a moving object do?
It would overcome the object's inertia and change its velocity causing it to accelerate.
500
A lever that produces an output force to lift the load is what?
A resistance arm.