Forces
Any push or pull that causes an object to move, stop, or change speed or direction.
What is a force?
The use of a force to move an object through a distance.
What is work?
An object's place or location.
What is position?
Give the definition for inertia.
What is the property of matter that keeps an object moving in a straight line or keeps it at rest?
Define orbit.
What is the path one body in space takes as it revolves around another body?
A force that opposes motion when two surfaces rub against each other.
What is friction?
The amount of work done for each unit of time.
What is power?
The distance an object moves in a given amount of time.
What is speed?
Give the definition of the second law of motion.
What is an object's acceleration depends on the size and direction of the force acting on it and on the mass of the object?
Define the law of universal gravitation.
All objects in the universe are attracted to all other objects.
The force of attraction between magnetic objects.
What is magnetism?
The formula for work with units.
What is force (Newtons) used to move an object multiplied by distance the object moves (meters)?
Answer in Joules.
An object's speed in a particular direction.
What is velocity?
Give the definition of the third law of motion.
What is: for every action force, there is an equal and opposite reaction force?
This is what would happend if the gravitation between Earth and the sun suddently stopped.
What is: each would move in a straight line in whatever direction it was moving?
The force that pulls all objects in the universe toward one another.
What is gravitation?
The formula for power with units.
What is work in Joules divided by time in seconds?
Answer in watts.
A change in velocity.
What is acceleration?
Define conservation of momentum.
When momentum is not produced or lost.
A person driving a car and a person walking have different views of the motion of an object. What does each person have?
What is a different frame of reference?
Adding or subtracting individual forces gives this value.
What is net force?
Something that makes a task easier.
What is a machine?
A measure of how hard it is to slow down or stop an object.
What is momentum?
Explain what happens when a person pushes on a stuck door.
The door pushes back with a force equal in size and opposite in direction.
The property of matter that makes it difficult to push a stopped car is?
What is inertia?