You Better Work
A force does work when it causes a ________ on the body.
What is displacement?
Kinetic energy is _______.
What is "energy based on an object's motion?"
The most common formula for work.
What is W(work)=f(force)*d(displacement)?
The work done on an object if the displacement is 5 meters and the applied force is 4 newtons.
What is 20 joules?
The best science teacher at NAHS.
Who is Mr. Speers?
This is the unit used to measure the amount of work done on an object.
What is a joule?
Gravitational potential energy is _______.
What is "energy based on an gravity's force upon an object?"
The formula for gravitational potential energy.
What is PE=m(mass)*g(force of gravity)*h(object's height above the ground)?
The displacement of an object if the applied force is 3 newtons and the total work was 17 joules.
What is 5.666 meters?
Discounting forms of thermal energy like air resistance and friction in a physics problem is called _____.
What is "Happy Physics Land?"
To be considered work, the displacement must be ___.
What is "in the same direction as the applied force?"
Friction is a common form of this type of energy.
What is thermal energy?
The formula for kinetic energy.
What is 1/2m(mass)*v^2(velocity squared)?
The kinetic energy if the mass is 8 kilograms and the velocity is 4 m/s.
What is 64 joules?
Law of ________: energy is not created or destroyed, but it changes forms.
What is "conservation of energy?"
When work is considered negative.
What is "when the displacement is the opposite direction of the force?"
Which of the following is a form of energy?
a. electromagnetic energy
b. wind energy
c. sky energy
d. internal energy
What is "electromagnetic energy?"
The formula for elastic potential energy.
What is 1/2k(constant of elasticity)x^2(displacement of object squared)?
The potential gravitational energy if the total mechanical energy is 50 joules, the total kinetic energy is 15 joules, and the potential energy is 20 joules.
What is 15 joules?
In a ______ system, friction converts some mechanical energy into non-mechanical energy.
What is non-closed?
What is "the amount of energy generated when a one newton force moves an object one meter"?
Which of the following is not a form of energy?
a. potential energy
b. combustible energy
c. chemical energy
d. nuclear energy
What is combustible energy?
The formula for total mechanical energy.
What is "kinetic energy plus potential gravitational energy plus potential elastic energy"?
True or false: one can calculate gravitational potential energy with the mass and physical height of an object.
What is false?
(The height of the object from the ground is needed, not the actual height of the object."
The more specific unit for energy.
What is kg*(m/s^2)?