Newton's Laws and other stuff
Newton's First law of motion
What is the velocity of an object does not change unless the object is acted upon by an external force?
A simple machine consisting of a wheel over which a rope or cable is passed.
What is a pulley?
The measure of how quickly an object moves.
What is v=d/t?
The SI unit of work.
What is a joule?
The quantity of motion that is defined as the product of an object's mass and velocity.
What is momentum?
The term for a measure of how much help a machine gives.
What is the mechanical advantage?
Newton's 2nd law of motion
What is the force required to accelerate an object at a certain rate equals the object's mass times the desired acceleration?
The simple machine which is like an incline plane that modifies the applied force and directs it to the side.
What is a wedge?
The formula for Newton's second law of motion.
What is F=ma?
The velocity at which air resistance stops a falling object from accelerating.
What is terminal velocity?
The space relative to which motion is measured.
What is frame of reference?
The term for devices used to multiply force for the purpose of doing work.
What is machines?
Newton's 3rd law of motion
What is for every action there is an equal and opposite reaction?
The simple machine that is a sloping surface that allows an object to be raised without being lifted straight up?
What is an incline plane?
The formula for the weight of an object found using Newton's 2nd law and gravity.
What is F(weight)=mg?
Any mathematical quantity that has both magnitude and direction.
What is a vector?
The branches of physics discovered before 1900.
What are classical physics?
The measure of how well a machine converts input work into output work.
What is efficiency?
The sum of two or more vectors.
What is a resultant?
A device that is considered a circular level and can be used to multiply distance, speed, or force.
What is a wheel and axle?
The formula for calculating energy transferred from one object to another by force.
What is W=Fd?
The rate of doing work.
What is power?
The center-seeking force that causes an object to travel in a curved path.
What is centripetal force?
IMA=2(pie)r/P
What is the ideal mechanical advantage of a screw?
The distance an object travels per unit of time.
What is speed?
The simple machine that is considers a circular lever and can be used to multiply distance, speed, and force.
What is a wheel and axle?
The formula for the relationship between free-fall distance and the acceleration of gravity.
What is d=1/2gt^2?
The quantity that represents any change in an object's postition.
What is displacement?
This scientist discovered the laws of motion and gravitation, laying the foundation for much of modern physical science.
Who is Isaac Newton?
n=W(output)/W(input)
What is the measure of how well a machine converts input into output (efficiency)?
An object that hangs from a fixed point and swings back and forth.
What is a pendulum?
The output distance of a screw.
What is the pitch (distance between two adjacent threads)?
The formula for the momentum of an object?
What is p=mv?
The attractive force that exists between any two bodies and is caused by their mass.
What is gravitational force?
The type of friction that affects stationary objects, preventing them from moving.
What is static friction?
IMA=d(input)/d(output)
What is the general formula for mechanical advantage under ideal conditions?
This person's teachings dominated scientific thought for almost 2,000 years.
Who is Aristotle?
The combination of one or more fixed pulleys and one or more movable pulleys.
What is block and tackle?
W=Fd
What is the formula for work?
The study of motion and forces.
What is dynamics?
The type of friction that affects a sliding object already in motion.
What is kinetic friction?
A way to increase the efficiency of a machine.
What is reduce the friction of the machine?
The branch of physics that addresses the effects of forces on matter.
What is mechanics?
The arrangement of the input arm, output arm, and fulcrum.
What is how levers are classified?
P=W/t
What is the rate of doing work?
The SI unit used to measure power.
What is watt?
The term in physicists use to refer to any change in velocity.
What is acceleration?
F(kf)=u(k) times F(w)
What is the magnitude of kinetic friction force?