KE & PE
On a pendulum where is kinetic energy the highest?
at the bottom point
What are the axis of a speed graph?
Distance is on the y axis and time is on the x axis
What is newton's 1st law?
an object in motion stays in motion and an object at rest wants to stay at rest unless acted upon by an unbalanced force.
What energy transfer takes place when I plug in a hair dryer and turn it on?
Electrical --> thermal --> sound
what is conduction
heat transfer through a solid
On a roller coaster what happens to potential energy as the car speeds down the first hill?
Potential energy is transferred to kinetic energy.
Draw a picture of what constant speed looks like on a motion graph.
it should be a diagonal line
What is newton's 2nd law?
force = mass x acceleration of an object
what energy transformation takes place when I start a gas powered car?
chemical --> mechanical --> electrical
what is convection?
heat transfer through a fluid
What two things does potential energy depend on?
Height and mass of the object
Draw what acceleration looks like on a motion graph
it should be a curved line
what is newton's 3rd law?
Every action has an equal and opposite reaction
what energy transformation takes place for Mr. Rooks to run a marathon?
Chemical --> mechanical --> thermal
what is radiation?
heat transfer in the form of waves
What two things does kinetic energy depend on?
Speed and Mass of an object
Should be diagonal then flat then diagonal still continuing in the same direction.
What do you do on a net force problem if the two arrows are point away from each other?
you subtract them
what energy transformation takes place to use your chromebook?
chemical --> electrical --> light
If I pick up a hot cup of coffee and burn my hand, what method of heat transfer was used?
conduction
Energy cannot be created or destroyed, it just changes forms.
If Coach Banister was coaching at the basketball game and telling the girls to run up the court then make then shot then get back down the court to defend what would that look like on a graph?
Should be diagonal line, flat line, then diagonal line back to the start.
What do you do if the two arrows on a net force problem are pointing in the same direction?
You add them together
what energy transformation takes place to turn on a flashlight?
chemical --> electrical --> light
what method of heat transfer is used to keep hot air balloons in the air?
convection