Forces & Motion
The force that opposes motion between two surfaces in contact.
What is friction?
The energy an object has due to its motion
What is kinetic energy?
A material through which electric charge can easily flow
What is a conductor?
The attractive force between all objects with mass
What is gravity?
A rigid bar that pivots around a fixed point to lift or move something
An object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by a net force.
What is Newton's First Law of Motion?
Stored energy, such as the energy in a stretched rubber band or an object held above the ground
What is potential energy?
The flow of electric charge
The name of the English scientist who first described the law of Universal Gravitation
Who is Sir Isaac Newton?
A simple machine that consists of a grooved wheel with a rope or cable running around it.
What is a pulley?
The rate at which velocity changes over time.
What is acceleration?
The unit of measurement for energy and work
What is a joule?
The opposition to the flow of electric current
What is resistance?
An objects mass multiplied by the acceleration due to gravity, measured in Newtons.
What is weight?
A ramp used to lift a heavy object with less force over a longer distance.
What is a inclined plane?
This principle states that for every action, there is an equal and opposite reaction.
What is Newton's 3rd Law of Motion?
This law states that energy cannot be created or destroyed, only transformed from thing to another
What is the law of conversation of energy?
This is created by moving electric charges and can exert a force on other charges
What is a magnetic field?
This is the constant value for the acceleration due to gravity on Earth
What is 9.8 m/s2?
A simple machine that uses a spinning axle to help move or lift something.
What is a wheel and axle?
The formula that relates force, mass, and acceleration
What is F=ma (Newton's Second Law)?
The amount of energy transferred when a force causes an object to move over a distance
What is work?
The relationship between voltage, current and resistance in an electrical circuit
What is Ohm's Law?
The equation that describes the force of gravity between two objects, involving their masses and the distance between them
What is F=(Gm1m2)/r^2
This is the ratio of the force produced by a machine to the force applied to it.
What is a mechanical advantage?