vocabulary
when an object wants resist a change in motion
what is inertia
mass multiplied by acceleration
how to calculate force
BLANK can not be created nor destroyed
what is Law of Conservation of mass
heat (TE) transfer through touch
what is Conduction
a train travels 190 kilometers in 3.0 hours, and then 120 kilometers in 2.0 hours. what is the average speed
the train has a average speed of 62km/h
the rate of doing work
what is power
distance over time
how to calculate velocity
BLANK can not be created nor destroyed only converted in to a different form of BLANK
(it would be too easy without the blanks)
what is Law of Conservation of Energy
when a substance changes from one state of matter to another
what is Phase Change
the IMA of a simple machine is 2.5. if the output distance is 1.0 m, what is the input distance
the input distance is 2.5 m
the ratio that an object moves to the time it moves
what is speed
total distance over total time
how to calculate average speed
an object will stay at rest unless a force acts upon it
what is newton's 1st law of motion
TE transferred through the air without contact
what is radiation
a 25-n force accelerates a boy in a wheelchair at 0.5 m/s2 .what is the mass of the boys and his wheel chair
the mass is 12.5 kg
the overall force acting on an object
what is net force
input distance divided by output distance
how to calculate IMA
every action has a reaction
what is newton's 3rd law of motion
TE transfer when particles of a flued moved from one place to another
what is Convection
you lift a book from the floor to a bookshelf 1.0m above the ground. how much power is used if the upward force is 15.0 N and you do the work in 2.0 s
(power = force by distance over time) (in w)
the power used is 7.5 w
the number of times a machine increases input force
what is Mechanical Advantage
initial velocity minus end velocity over initial time minus end time
how to calculate acceleration
acceleration equals the new force acting on an object over the mass of the object
what is newton's 2nd law of motion
when energy converts from one type to another
what is Energy Transformation
how much heat is needed to raise the temperature of a 100.0 g of water by 85.0oC
(mass x specific heat x temperature change) (water sh=4.18j/goC)
the heat needed is 35530 j/goC