Force and Motion
Traveling at a rate of 80 km/h, how far would a vehicle travel in 1 hour?
80km
The energy of motion.
What is kinetic energy?
The principle says a pendulum can never swing higher than it's original position unless acted upon by an external force.
What is the Law of Conservation of Energy?
The two "signs" of electric charge.
What are positive and negative?
A device that uses the Earth's magnetic field to indicate the cardinal directions anywhere on Earth.
What is a compass?
A collision in which objects may stick together or deform, and the total kinetic energy is not conserved (it is lost as heat, sound, etc.).
What is an inelastic collision?
What are the base SI units of speed?
meters per second (m/s)
The energy an object has because of it's position or state.
What is potential energy?
The energy source for the motion of a falling object.
What is gravitational potential energy?
The source of all electric charges (you must correctly name both and their sign)
What are positive (from protons) and negative (from electrons)?
An area of space where a magnetic will feel a magnetic force.
What is a magnetic field?
The base SI units of luminous intensity.
What are candela (cd)?
What is the acceleration of a rocket that increases its speed from 0 m/s to 312m/s in 60s?
80 m/s^2
What are mass and velocity?
An object that is slid along the table eventually comes to a stop, losing all of it's kinetic energy due to friction. What do we call friction in this scenario?
A force external to the system.
A place in space where an electric charge will feel an electric force.
What is an electric field?
The two things that affect the magnetic force exerted by a magnet (you must name both).
What are the strength of the magnet and the distance from the magnet?
The type of material that can become magnetic when in the presence of a magnetic field, but is not magnetic when there isn't a magnetic field present.
What is a ferromagnetic material?
Which of Newton's laws gives us the formula
F=ma?
Newton's 2nd law
The two physical quantities that affect the gravitational potential energy of an object.
What are mass and height above a reference point?
When you lift an object above the floor (or any reference point) you give it gravitational potential energy that it didn't have before. Where did this energy come from (hint: it's not your kinetic energy, the object would still have gravitational potential energy after you've stopped moving it upwards).
From the chemical energy stored within your body (transferred through your muscles and such).
The units of electric potential.
What are volts (V)?
The type of magnet that is only magnetic if there is an electric charge flowing through it.
What is an electromagnet?
The only electricity unit that is a base SI unit.
What are amps (A)?
How fast would an 80kg object accelerate if it had a net force of 600N applied to it?
7.5 m/s^2
The physical quantities that affect the elastic potential energy of an object.
What is the spring constant (or stretchy-ness) of the material and it's length relative to it's original length?
The true "0" height reference point for measuring the gravitational potential energy of any object on Earth.
What is the center of the Earth?
The total amount of charge passing by a cross sectional point within a wire within 1 second?
What is electric current or amps (A)?
The electrical measurement that must be increased if you want to increase the strength of the field created by an electromagnet.
What is electric current (amps)?
The support force exerted upon an object by a surface, which acts perpendicular (at 90°) to that surface.
What is the normal force?