Work
This is the formula for Work.
What is W= F*d*cos theta?
This is the formula for PE.
What is PE= mgh?
This is the expanded form of the Formula for the W.E. Theory
What is Wnet= 1/2mvf2-1/2mv02?
These forces cause energy to be transformed into in forms that cannot be easily regained back into the the system.
What are Non-Conservative Forces?
This is the formula for Power in terms of Work.
What is P=W/t?
This is the value used for theta when the direction of the force and the work are the same.
What is 0?
This is the formula for KE.
What is KE= 1/2mv2?
These are the three forms of the W.E. Theory Formula.
What is Wnet= Delta KE, Wnet= KEf-KE0 , Wnet= 1/2mvf2-1/2mv02
These forces cause energy to be transformed into in forms that can be easily regained back into the the system.
What are Conservative Forces?
These are two alternate formulas for Power.
What is P= f*d/t and P= Fv?
This is what you use when the direction of the force and work are opposite.
What is 180?
This is the KE of an object with a 10 kg mass and a velocity of 60 m/s. 2 sig figs in sci-notation
What is 1.8 x 104 J?
This is the Wnet of a system that starts with 4.5 J of KE and ends with 2.89 X 102 J of energy. 3 sig figs in sci.notation
What is 2.85 x 102 J?
This is the formula for the Conservation of Energy in which we ignore non-conservative forces.
What is PEi+ KEi= PEf=KEf ?
This is the power used to move an object that required 2.35X104 J of work to move over 34 seconds. 3 sig figs in sci-notation
What is 6.91 x 102?
This is the work done by a duck with a mass of 2.9 kg swimming with an acceleration 4 m/s2 over a distance of 12 meters. 3 sig figs in sci-notation
What is 1.39 x 102?
This is the PE for an object with a 5 kg mass sitting 25 meters above a horizontal plane. 3 sig figs in sci-notation
What is 1.23x 103 J?
Calculate the force exerted by a bare fist on an opponent’s face, if the fist and face compress 2.00 cm during a blow in which the 7.00-kg arm is brought to rest from an initial speed of 10.0 m/s. 3 sig figs in sci-notation
What is 1.75 x 104 N?
This is the KEi of a system that has a final total energy of 4.76 x105 J if its initial height was 45 m above the horizontal and has a mass of 9 kg. 3 sig figs in sci-notion.
What is 4.72 x105?
This is the average useful power output of a person who does 6.00×106 J of useful work in 8.00 h? 3 sig figs
What is 208 W?
Calculate the work done by a person who pushes a crate 4.00 m up along a ramp with a force of 500 N that makes an angle of 20.0º above the horizontal. 3 sig figs in sci- notation.
What is 1.88x 103?
This is the KE mid-fall and the PE just before it fell of an object that has a mass of 1.4 kg falling at a velocity of 4.78 m/s from a height 7 m above the horizontal plane. 2 sig figs
What is 16 J=KE and 96 J=PE?
Using energy considerations, calculate the average force a 60.0-kg sprinter exerts backward on the track to accelerate from 2.00 to 8.00 m/s in a distance of 25.0 m, if he encounters a headwind that exerts an average force of 30.0 N against him. 6 min 3 sig figs
What is -102 N?
This is the final velocity of an object with a 30 kg mass, being dropped from rest at a height of 100 m on the planet Earth. 3 sig figs, 6 min
What is 44.3 m/s?
This is how long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp = 746 W) to reach a speed of 15.0 m/s, neglecting friction. 2 sig figs
What is 3.2 s?